Which would result a farmer in producing more food at a lower cost?
A)planting wheat that is resistant to weed killer B)breeding pear trees that grow sweeter fruits C) growing rice that only grows in warm climates D)producing vegetable oil that has added vitamin A

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

i think slash and

i think that the answer is c