Answer :
B. Parks
The answer would be parks because:
A. Park's is saying park is, describing the park
B. Parks is saying that it is the parks own, it belongs to the park
C. Parks' is saying that there is more than one park that you are talking about
The answer would be parks because:
A. Park's is saying park is, describing the park
B. Parks is saying that it is the parks own, it belongs to the park
C. Parks' is saying that there is more than one park that you are talking about