Critical Reasoning (CR) | People who do regular volunteer work tend to live longer on average

Clear D
Because it says the ones who get involved with volunteer work are ones who are healthy to beging with and therefore it is not the volunteer work that is responsible for their long life (because they were already healthy before startomg volunteer work) -> cause (volunteer work) and effect (longer life) relationship in the questions stem does not hold in this option and hence it weakens the argument

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