Bats, which have a high-calorie diet of insects and face little danger from predators, sleep a lot. In contrast, cows, which have a low-calorie diet and are at risk from predators, sleep loss. What function of sleep theory do these differences support?
a. Sleep enhances immune function.
b. Sleep repairs and restores.
Oc Sleep conserves and protects.
Od. Sleep enhances learning and memory.
yers