The correct answer is A) precipitation. Precipitation is any form of water that falls from clouds and reaches the ground. This includes rain, snow, sleet, hail, and drizzle. Snow, sleet, and hail are specific forms of precipitation. Condensation is the process by which water vapor in the air changes into liquid water or ice crystals (forming clouds). Transpiration is the process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere. Evaporation is the process by which water changes from a liquid to a gas or vapor. None of these describe the forms of water *falling* to the ground.