Every male U. S. citizen over the age of 18 must sign up with the Selective Service. If a war breaks out these men
could be required to serve in the military
A. The rule deals with fasues of war and national safety
B. The rule does not apply equally to male and female citizens,
c. Only citizens over the age of 18 are required to sign up.
D. Citizens do not have a choice about signing up

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D. Citizens do not have a choice about signing up.

Explanation:

Technically, citizens do not have a choice in signing up or not. However, they can be excluded from having to join the military through reasons, such as medical conditions, beliefs, or failing the physical tests.

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.