Why did the nation’s progressives oppose U.S. involvement in World War

Why did the nation’s progressives oppose U.S. involvement in World War I?

a. They were naturally pessimistic and knew the United States would lose.
b. They understood how financially costly the war would be for the nation.
c. They did not believe the reports sent over from Europe.
d. They opposed the Allied position because it was one of aggression.
e. They opposed all war as being an obstacle to social reform.

ANSWER
E