Concept: Population distribution depends on climate, water availability, and is studied using population density.
Explanation:Extreme climates such as very hot or cold deserts are uncomfortable for human habitation.
People are attracted to areas with mild climates and little seasonal variation.
Ready access to fresh water also encourages settlement.
For this reason, river valleys are among the most densely populated places in the world.
Population density is an important tool for understanding the spatial distribution of people.
So both given statements about population distribution are correct.
Answer: Option C – Both 1 and 2.