Which option gives a correct environmental effect of population growth?

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

Correct answer: A. When population grows, more people need water, land, food, housing and energy. Their activities also produce more domestic and solid waste. Therefore, existing water supplies, land resources and waste-management systems may face greater pressure, especially when planning and public services do not expand adequately. Option A is carefully worded with “may,” because the result depends on consumption patterns, technology, planning and resource management. B is incorrect because population growth does not normally change the colour of the sky; sky colour is mainly related to sunlight and atmospheric conditions. C is incorrect because mountains do not simply disappear when population rises. D is incorrect because the number of days is determined by the calendar and the Earth’s movements, not by population size. Memory cue: population growth increases the number of resource users and waste producers.