Why are most of earth's deserts located in the subtropical zone?
a. these regions receive more sunlight than the equatorial region.
b. these regions receive less sunlight than the equatorial region.
c. these regions are very warm but less humid than other regions.
d. these regions are very warm but more humid than other regions.

C) These areas are very warm but less humid than other regions.

Explanation:

It is an area of high atmospheric pressure. This means that cold air is descending and will return to the lowest pressure, towards the equator. The air is dry and rarely forms clouds as it is descending. This allows for a maximum of incoming solar radiation to heat the ground surface. The air moves towards the equator becoming more humid and rise, which helps provide rain for the rainforest. By the time it reaches the desert area it is once again dry and descending.

a. i. only is correct.