The answer could be either A. or C. I'm leaning more into C. because scarcity means having short supply of something, and having not enough resources doesn't satisfy all of ones needs.
Hope this helps!
I believe the answer is: serve at homeless shelters.
The help that given through a community service tend to target small/local area.
Service through army is for a nationwide area, so option A is wrong.
Signing up for peace corp is affecting world wide area, so option B is wrong.
Take part in teach America is a form of service with nation wide influence, so option D is wrong.
That leave us with serving at homeless shelters.
They used it to control their government.
C is the correct answer.
Defeating the Union blockade and keeping the Southern ports open was essential for the traitorous Rebel government as it allowed them to continue to sell cotton to Europe in exchange for supplies and weapons. The Union's blockade aimed to stop the exchange of cotton for supplies and weapons.