Desertification would most impact climate area first ?

I hope this is related but...

Explanation:

Both natural variability in climate and global warming can also affect rainfall patterns around the world, which can contribute to desertification. ... And a warmer climate can speed up the decomposition of organic carbon in soils, leaving them depleted and less able to retain water and nutrients.

answer; i believe the correct answer is (crops);

the answer to this question is d