Central theme of the passage is about:
Explanation:
The author talks about the choices people make and how they can affect them and the people around them. In the experiment done by the author, the choice made by every student affects the grades of the entire class. The author then compares the situation to the choices that all the people will have to make regarding climate change. Thus, the author wants to convey the interconnectedness of choices made by people. Hence, the answer is option B.
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