Cutting "steps" or terraces into the sides of hills is one way to A. increase arable land for farming
B. decrease the risks of flooding
C. store water during times of drought
D decrease agricultural yields

Cutting ''steps'' or terraces into the sides of hills is one way to increase arable land for farming.

Explanation:

In order for farming to take place, there need to be certain conditions that will enable it. One of the most important conditions is arable land. This type of land is limited though, and in multiple places what nature has provided in this type of land is not enough to satisfy the demand of humans.

In order to increase the arable land, the humans became inovative, and they thought of cutting up ''steps'' or terraces into the sides of steep hills and mountains. In this way, they were able to create flat land on the sides of the hills and mountains and make it suitable for farming. This has increased significantly the amount of arable land and production of food, and some of the best examples are some of the countries that have very high population but limited arable land naturally, like Japan, China, Vietnam, and Indonesia.

answer(c) carved on a babylonian clay tablet that showed earth as a flat circular disk;