Meaning: 'Triggered' means to cause something to happen or to initiate an event.

Wrong options:

• aggressive: 'Aggressive' is an adjective that describes a forceful or hostile manner, which does not fit the context of describing the action of rains.
• endangered: 'Endangered' is an adjective that refers to species at risk of extinction, which does not relate to the action of the rains.
• airborne: 'Airborne' is an adjective that describes something carried by air, which does not apply to the context of flooding caused by rains.

Correct answer: waterborne

Explanation: The term 'waterborne' is an adjective that describes diseases transmitted through water, fitting perfectly in the context of the flooding situation where clean water is compromised. It aligns with the preceding context of the crisis caused by the floods.

Meaning: 'Waterborne' refers to diseases or pathogens that are transmitted through contaminated water.

Wrong options:

• endangered: 'Endangered' does not fit as it refers to species at risk, not diseases.
• airborne: 'Airborne' describes diseases transmitted through the air, which is not relevant to the context of flooding and water-related issues.
• aggressive: 'Aggressive' is an adjective that does not relate to the type of diseases that arise from flooding.

Correct answer: acute

Explanation: The word 'acute' is an adjective that describes something severe or intense, which fits the context of the child survival crisis being described. It indicates the seriousness of the situation following the floods.

Meaning: 'Acute' means having a sudden onset or being severe in nature.

Wrong options:

• aggressive: 'Aggressive' does not fit as it implies a forceful approach rather than describing the severity of a crisis.
• endangered: 'Endangered' refers to species at risk, which does not apply to the context of a crisis.
• waterborne: 'Waterborne' describes diseases, not the nature of the crisis itself.