The Population of the California Red-Legged Frog Has Been Severely

The population of the California red-legged frog has been severely affected as its habitat has been drained, filled, and covered with housing developments, parking lots, and other urban structures.The best description of the type of pressure exerted on the frogs in this situation is

A) habitat loss.
B) habitat restoration.
C) habitat degradation.
D) habitat pollution.
E) invasive predators.