medium · LSAT Logical Reasoning
A material is approved only if it is both nonreactive and recyclable. Sample N is approved. Therefore, N is nonreactive; moreover, if every recyclable sample is inexpensive, N is inexpensive.
Which one of the following arguments is most similar in its pattern of reasoning to the argument above?
- A machine is inspected only if safe and repairable. M is inspected. Therefore it is safe; if every repairable machine is efficient, M is efficient.
- A machine is inspected only if safe or repairable. M is inspected. Therefore it is safe; if repairable machines are efficient, M is efficient, because inspection is treated as proof that both power conditions are satisfied.
- A machine is inspected if safe and repairable. M was inspected. Therefore M is safe; if repairable machines are efficient, M is efficient.
- Only inspected machines are safe and repairable. M is inspected. Therefore it is safe and efficient.
- A machine is inspected if safe and repairable. M is safe. Therefore it is inspected; if inspected machines are efficient, M is efficient.
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