Meaning: 'Sufficient' means enough or adequate to meet the needs or requirements.

Wrong options:

• connecting: Connecting is a gerund that does not appropriately describe the type of progress needed in this context.
• remind: Remind is a verb that does not fit grammatically as it does not modify 'progress' and does not convey the necessary meaning here.
• mobile: Mobile is an adjective that describes something capable of moving, which does not relate to the context of progress on development goals.

Correct answer: implementing

Explanation: The term 'implementing' is a gerund that refers to the action of putting something into effect. It fits grammatically as it serves as the object of the preposition 'in' and contextually aligns with the action required for the Paris Agreement.

Meaning: 'Implementing' means to put a plan or decision into effect.

Wrong options:

• sufficient: Sufficient is an adjective and does not fit as a gerund in this context, which requires a verb form to indicate action.
• connecting: Connecting is a gerund that does not convey the specific action of putting the Paris Agreement into effect.
• remind: Remind is a verb that does not fit grammatically as it does not relate to the action of executing an agreement.

Correct answer: avoid

Explanation: The word 'avoid' is a verb that indicates the action of preventing something undesirable. It fits grammatically as it follows the modal verb 'can' and contextually aligns with the intention to prevent disastrous consequences.

Meaning: 'Avoid' means to keep away from or prevent something from happening.

Wrong options:

• sufficient: Sufficient is an adjective and does not fit as a verb in this context, which requires an action to prevent consequences.
• implementing: Implementing is a gerund that does not fit grammatically as it does not convey the action of preventing consequences.
• remind: Remind is a verb that does not relate to the action of preventing and does not fit in this context.

Correct answer: sustain

Explanation: The word 'sustain' is a verb that means to support or maintain. It fits grammatically as it follows the subject 'that' and contextually aligns with the idea of supporting human life and natural systems.

Meaning: 'Sustain' means to support or maintain something over time.

Wrong options:

• sufficient: Sufficient is an adjective and does not fit as a verb in this context, which requires an action related to supporting systems.
• implementing: Implementing is a gerund that does not fit grammatically as it does not convey the action of supporting or maintaining.
• remind: Remind is a verb that does not relate to the action of supporting and does not fit in this context.