Why is ethanedioic acid /potassium permanganate used to wash droplets of kmno4?

i think so it’s will be b yes i believe its

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.

so she was walking and she stepped on warm jeffy , uh uh uhh dadye i just pooped my pants