During the senior high school entrance examination, the weather was hot. In order to make students have a cool examination environment, before the examination, the teacher will sprinkle water on the e

During the senior high school entrance examination, the weather was hot. In order to make students have a cool examination environment, before the examination, the teacher will sprinkle water on the examination room to cool down. The teacher spilled water on the examination room, which can evaporate at room temperature. Evaporation should absorb heat and absorb the heat in the air to reduce the temperature of the air.

So choose a.