One should not do anything that has the potential to produce serious harm to one’s society.
Facts
conditional (anything) has potential to → shouldn't do it seriously harm society
many people → serious harm refrain from voting to society
facts
The actions/inactions of celebrities / widely respected people are widely emulated.
Some celebrities do not vote.
Evaluate
Since this is a Must Be True question, we prioritize looking for conditionals and overlapping concepts. The first and last claims are both rules and both involve the concept of "serious harm to society".
They chain together to tell us that, .
Do the middle two claims provide any facts that trigger this rule?
Sure -- they're talking about celebrities who don't vote and telling us that people widely emulate celebrities' public actions.
If a celebrity's public action is to refrain from voting, it could lead to many people emulating that and refraining from voting themselves.
Goal
The correct answer will probably be getting at the idea that it's bad for celebrities to make a public action of not voting, because if many people emulate that, it will produce serious harm to society, and we shouldn't do anything with the potential to produce serious harm to society.