Question

in order to increase the number of soldiers in the american expeditionary forces, the united states--? a. mandated all men between 18 - 35 were legally obligated to fight b. made enlistment voluntary through the servicemans choice act c. issued a draft through the selective service act d. did nothing, the army was already sufficiently large and well equipped

Explanation:

The Selective Service Act was a key measure to increase the number of soldiers. It was a draft - based approach.
The Serviceman’s Choice Act was about enlistment (voluntary), not a mandatory increase in numbers. Mandating all men between 18 - 35 to fight (Option A) is an over - simplification and not an actual act. Saying the army was already large (Option D) is incorrect as more soldiers were needed.

Answer:

C. Issued a draft through the Selective Service Act