Small Desert Mammals Are Often Osmotically Stressed in Addition to Being

Small desert mammals are often osmotically stressed in addition to being heat stressed; therefore they will want to

A) avoid heat loss by evaporative cooling and instead employ heat storage mechanisms to deal with heat stress.
B) avoid heat loss by evaporative cooling and instead burrow to seek cooler microclimates.
C) avoid heat loss by evaporative cooling and instead restrict their activity to night when ambient temperatures are cooler.
D) avoid heat loss by entering into extended periods of sleep and inactivity during the summer (estivation) which is similar to hibernation by some animals in the winter.
E) avoid heat loss by evaporative cooling by burrowing and restricting activity to times with cooler temperatures.