The main purpose of the selective service act of 1917 was to
a. increase the size of the armed forces by using the draft.
b. restrict membership in the armed forces to those with prior combat experience.
c. allow all branches of the armed forces to be sent to europe.
d. equip the armed forces with the necessary weaponry for battle.

increase the size of the armed forces by using the draft.

Explanation:

just took the quiz :-)

  Increase the size of the armed forces by using the draft.

Explanation: The correct answer is A: Increase the size of the armed forces by using the draft. With this initiative of law, which was promulgated on May 18, 1917, it was possible to recruit an approximate number of 2.8 million men, which meant a large number and in favor of the United States Department of War, since it had been detected that the number of men in the army of Germany was higher than that of the American nation. So they chose to follow this law and form what would be the United States Army in the war against Germany.