Question

which of the following claims does the author not make about humans influence on the water crisis?
a they ensure access to clean drinking water to major cities.
b they contribute pollutants to the water that make it unsafe.
c they trigger natural events that can make water scarcer.
d they use water as a means to control other people.

Explanation:

• Option B: Human activities like industrial waste disposal contribute pollutants to water, making it unsafe. This is a common claim about human - water crisis influence.
• Option C: Human - induced climate change (e.g., deforestation, fossil fuel burning) can trigger droughts (a natural event) that make water scarcer. This is a valid claim.
• Option D: Historically and in some regions, water has been used as a political tool (e.g., controlling water access in conflicts) to control people. This is a claim that can be made.
• Option A: Ensuring access to clean drinking water to major cities is a positive human action (if it is done). But the question is about claims the author does NOT make regarding humans' influence on the water crisis. Usually, discussions about the water crisis focus on negative human impacts (pollution, over - use, misuse), not on positive actions like ensuring access (unless the text specifically says the author is against such efforts, which is not indicated here).

Answer:

A. They ensure access to clean drinking water to major cities.