Which example shows population increase due to a human factor?

Correct answer: Workers arriving after a new factory is set up

The direct answer is A: workers arriving after a new factory is set up show population increase due to a human factor. A human factor is an activity or decision made by people that influences settlement or population change. Step by step: a factory is established by human economic activity; it creates jobs; workers and sometimes their families move toward the factory; the local population increases and services or housing may expand. Option A is correct because industry and employment attract migrants. Option B, a high snowy peak, is a physical landform, not an example of people being attracted by a human activity. Option C, a dry desert, is a natural environment and does not itself show human-caused population increase. Option D, harsh cold climate, is a physical condition that may discourage settlement rather than demonstrate an increase caused by people. Memory cue: a new industry can create jobs, and jobs attract population.