Three-fourth part of our input is
Read the passage and answer the question.
Passage 2
Just as you can ruin the stomach and impair the whole body by taking too much nourishment, so you can overfill and cook the mind by feeding it too much. The more you read, the fewer are the traces left by what you have read : the mind becomes like a tablet crossed over with writing. There is no time for ruminating, and no other way can you assimilate what you have read. If you read on and on without setting your own thoughts to work what you have read cannot strike root and is generally lost. It is, in fact, just the same with mental as with bodily food : hardly the fifth part of what one takes is assimilated. The rest passes out in evaporation, respiration and the like.
Three-fourth part of our input is
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Correct answer: (E) None of the above
Explanation
The passage says hardly the fifth part of what one takes is assimilated and the rest passes out. It never speaks of a three-fourth part, so none of the options fits.