After reading and analyzing the claim and the findings in source, we can choose the following option as the one containing the best supporting reason for the claim:
C. Volunteering in different communities would expose young people to different political views.
We can define claim as an assertion or statement that presents an author's ideas and stance about a certain subject.
In this particular case, we know that the claim is that young people should volunteer in different parts of the country. This claim must be connected to the findings in source, which basically say that neighborhoods are becoming political bubbles.
Connecting the two things, we have that, to avoid being absorbed by a political bubble and exposed to only one political point of view, young people should volunteer in different places. That way they would be exposed to different political views.
The option that contains precisely that idea and connects the claim and the supporting reason is letter C.
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https://brainly.com/question/4193488