Some medicines are expensive. All expensive things are not affordable for everyone. Which conclusion follows?

Correct answer: A. Some medicines are not affordable for everyone

  • A. Some medicines are not affordable for everyone
  • B. All medicines are unaffordable
  • C. No medicine is affordable
  • D. All expensive things are medicines

Explanation

The first statement covers only part of the class of medicines, so any valid conclusion must also be limited to some. Extending it to all medicines goes beyond what the premises support. The last option reverses the relationship, which is never valid.

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About Critical Thinking

Critical thinking examines how conclusions follow from evidence, including claims, assumptions, arguments, inferences and relevant facts. Questions ask you to identify hidden assumptions, distinguish strong from weak evidence, assess cause and effect, recognise common reasoning errors, and decide which statement strengthens or weakens an argument.

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