The Reagan administration rapidly increased spending on

a. social programs.

b. support of the Soviet Union.

c. the American military.

d. enlargement of the federal government.

The Reagan administration rapidly increased spending on c. the American military.

This was during the Cold War, where U. S. and U. S. S. R. were trying to do anything they could to be technologically and militarily better than the other. The Cold War ended when U. S. S. R collapsed.