Critical Reasoning (CR) | A study has recently shown that happier employees are more productive.

MAGOOSH OE:

Answer = (C). The conclusion is that Saturnine's employees are happier than Davis', on the evidence that the former are more productive. While we do have the study as possible evidence, it actually doesn’t work in this argument: happier employees may be more productive, but we don’t know that productive employees are necessarily happier. Correlation does not imply causality. It may be that productivity at Davis is a consequence of employee happiness (i.e. "one set of circumstance"),
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