Answer:
C.
Explanation:
The purpose for registering with the Selective Service System is a duty required by the United States Government when an individual U.S. citizen reaches the age of eighteen but under twenty seven. This is an obligation to register so that if needed in a time of war, you will be conscripted in the military. The U.S.A has an all volunteer military currently, however in a desperate time of need, it may require additional citizens to help defend the country. This is where the selective service can call upon the registered individuals to become part of the military.