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.
Answer:
serve at homeless shelters.
Explanation:
The answer is
"serve at homeless shelters."
Community service means offering service to the people in the neighborhood or nearby place. It means serving a small group of people or a small place.
Other options are wrong because all these options shows service to the entire nation. All the other options whether to join the the US Army or US Navy, or signing up for the Peace Corps, or to take part in Teach for America campaign means offering service to the entire nation as a whole and not to a small community.
Thus the correct answer is
"serve at homeless shelters."
