If a student passes the entry test, they can join the college. Sana joined the college. Which conclusion follows?

  • A. Sana passed the entry test
  • B. Sana did not pass the entry test
  • C. Sana may or may not have passed the entry test
  • D. The entry test was easy

Explanation

The statement says passing is sufficient for joining, not that it is the only route, so Sana might have joined through a quota, transfer or other channel. Concluding that she passed would be affirming the consequent, an invalid form. Watch carefully for the difference between sufficient and necessary conditions.

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