Meaning: 'Disproportionately' means in a way that is out of proportion or unequal, particularly in terms of impact or effect.

Wrong options:

• working agencies: 'Working agencies' is a noun phrase that does not fit grammatically as it does not modify 'high impacts' appropriately.
• savings: 'Savings' is a noun that refers to money that has been saved, which does not relate to the context of impacts on the poor.
• years: 'Years' is a plural noun that does not fit the context of describing the nature of impacts.
• attendant: 'Attendant' is an adjective that describes something that accompanies another, which does not fit the context of impacts on the poor.
• current: 'Current' is an adjective that describes something happening now, which does not fit as it does not describe the nature of impacts.
• sustenance: 'Sustenance' is a noun that refers to food and drink regarded as a source of strength, which does not relate to the impacts on the poor.
• decades: 'Decades' is a plural noun that refers to a period of ten years, which does not fit as it does not describe the nature of impacts.

Correct answer: current

Explanation: The adjective 'current' refers to the present time, which is relevant when discussing projected human population growth. It fits grammatically as it modifies 'projected human population growth' and aligns with the context of the ongoing situation.

Meaning: 'Current' means happening or being used or done now; it refers to the present time.

Wrong options:

• working agencies: 'Working agencies' is a noun phrase that does not fit grammatically as it does not describe the state of population growth.
• savings: 'Savings' is a noun that refers to money that has been saved, which does not relate to the context of population growth.
• decades: 'Decades' is a plural noun that refers to a period of ten years, which does not fit as it does not describe the state of population growth.
• attendant: 'Attendant' is an adjective that describes something that accompanies another, which does not fit the context of population growth.
• disproportionately: 'Disproportionately' is an adverb that describes the extent of impacts, which does not fit as it does not describe the state of population growth.
• sustenance: 'Sustenance' is a noun that refers to food and drink regarded as a source of strength, which does not relate to population growth.

Correct answer: decades

Explanation: The noun 'decades' refers to a period of ten years, which is appropriate when discussing future projections of human population growth. It fits grammatically as it serves as a time frame for the expected rise in water demand.

Meaning: 'Decades' means periods of ten years, often used to discuss long-term trends or projections.

Wrong options:

• working agencies: 'Working agencies' is a noun phrase that does not fit grammatically as it does not indicate a time frame.
• savings: 'Savings' is a noun that refers to money that has been saved, which does not relate to the time frame of population growth.
• current: 'Current' is an adjective that describes something happening now, which does not fit as it does not indicate a time frame.
• attendant: 'Attendant' is an adjective that describes something that accompanies another, which does not fit the context of time.
• disproportionately: 'Disproportionately' is an adverb that describes the extent of impacts, which does not fit as it does not indicate a time frame.
• sustenance: 'Sustenance' is a noun that refers to food and drink regarded as a source of strength, which does not relate to the time frame.

Correct answer: sustenance

Explanation: The noun 'sustenance' refers to the means of sustaining life, particularly food and water. It fits grammatically as it serves as the object of the preposition 'for' and aligns with the context of providing for human needs.

Meaning: 'Sustenance' means food and drink regarded as a source of strength; it refers to what is necessary for survival.

Wrong options:

• working agencies: 'Working agencies' is a noun phrase that does not fit grammatically as it does not relate to the needs of humans.
• savings: 'Savings' is a noun that refers to money that has been saved, which does not relate to the context of human needs.
• decades: 'Decades' is a plural noun that refers to a period of ten years, which does not fit as it does not relate to the needs of humans.
• attendant: 'Attendant' is an adjective that describes something that accompanies another, which does not fit the context of human needs.
• disproportionately: 'Disproportionately' is an adverb that describes the extent of impacts, which does not fit as it does not relate to the needs of humans.
• current: 'Current' is an adjective that describes something happening now, which does not fit as it does not relate to the needs of humans.

Correct answer: collaborative

Explanation: The adjective 'collaborative' describes approaches that involve working together, which is essential in the context of promoting sustainable water management practices. It fits grammatically as it modifies 'approaches' and aligns with the context of teamwork in addressing water issues.

Meaning: 'Collaborative' means involving two or more parties working together towards a common goal.

Wrong options:

• working agencies: 'Working agencies' is a noun phrase that does not fit grammatically as it does not describe the nature of approaches.
• savings: 'Savings' is a noun that refers to money that has been saved, which does not relate to the context of approaches.
• current: 'Current' is an adjective that describes something happening now, which does not fit as it does not describe the nature of approaches.
• attendant: 'Attendant' is an adjective that describes something that accompanies another, which does not fit the context of approaches.
• disproportionately: 'Disproportionately' is an adverb that describes the extent of impacts, which does not fit as it does not describe the nature of approaches.
• sustenance: 'Sustenance' is a noun that refers to food and drink regarded as a source of strength, which does not relate to the context of approaches.

Correct answer: UN agencies

Explanation: The noun phrase 'UN agencies' refers to organizations that are part of the United Nations, which is relevant in the context of addressing water issues collaboratively. It fits grammatically as it serves as the subject of the sentence and aligns with the context of partnerships.

Meaning: 'UN agencies' refers to organizations that are part of the United Nations, involved in various global initiatives.

Wrong options:

• working agencies: 'Working agencies' is a noun phrase that does not fit grammatically as it does not specify the context of UN-related organizations.
• savings: 'Savings' is a noun that refers to money that has been saved, which does not relate to the context of organizations.
• current: 'Current' is an adjective that describes something happening now, which does not fit as it does not describe organizations.
• attendant: 'Attendant' is an adjective that describes something that accompanies another, which does not fit the context of organizations.
• disproportionately: 'Disproportionately' is an adverb that describes the extent of impacts, which does not fit as it does not describe organizations.
• sustenance: 'Sustenance' is a noun that refers to food and drink regarded as a source of strength, which does not relate to the context of organizations.