Question

Young American men must register with the Selective Service System when they reach the age of _______.

A. 18
B. 19
C. 20
D. 21
⁉⁉⁉

Answer 1

A.
Source:
I had to register when I reached age 18.

Answer 2

A. 18.

Step-by-step explanation:

All male US citizens and male immigrants residing in the United States between 18 and 25 must register with the Selective Service within 30 days of their 18th birthday. This is done in case it is necessary to constitute the mandatory military service in the future.