Which option gives a correct environmental effect of population change?

Correct answer: Pressure on water, land and waste management may change.

Answer: A. Environmental effects concern the relationship between people and natural resources and the waste produced by human activities. When population size or settlement patterns change, the demand for water and land may change, and local authorities may need to manage more or less solid waste and wastewater. A is correct because water use, land pressure and waste management are genuine environmental concerns linked with population change. B is incorrect because the sky does not have a height that changes in this way. C is incorrect because a river’s name is a cultural or administrative matter, not the normal environmental effect described here. D is unrelated. The effect may be greater with population growth, but the question correctly says pressure may change, so it also allows for decline or redistribution. Memory cue: environment means resources, land, water and waste.