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Assertion: absolute energy consumption is the right measure of a plant's efficiency. Reason: it is the quantity the plant actually pays for.

  • A.the assertion is true but the reason given for it is false
  • B.the assertion is false although the reason offered is a true statement in itself
  • C.both the assertion and the reason are true and the reason explains the assertion
  • D.both the assertion and the reason are true but the reason does not explain the assertion

Answer: B

Correct answer: the assertion is false although the reason offered is a true statement in itself

The reason is true - the plant does pay for the absolute quantity - but it does not support the assertion. Efficiency is energy per unit of output, and absolute consumption can fall because production fell or rise because production rose, in neither case saying anything about how well energy was used.

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