Floatovoltaics reduce the need of valuable land area， save drinking water that would otherwise be lost through（）， and show a higher efficiency of solar energy conversion， as the panels are kept at a（）temperature than they would be on lanD.

Floatovoltaics reduce the need of valuable land area， save drinking water that would otherwise be lost through（）， and show a higher efficiency of solar energy conversion， as the panels are kept at a（）temperature than they would be on lanD.
A.precipitation， cooler
B.evaporation， hotter
C.precipitation， hotter
D.evaporation， cooler
正确答案：evaporation， cooler