No one knows what purposes, if any, dreams serve, although there are a number of hypotheses. According to one hypothesis, dreams are produced when the brain is erasing “parasitic connections” (meaningless, accidental associations between ideas), which accumulate during the day and which would otherwise clog up our memories. Interestingly, the only mammal that does not have rapid eye movement sleep, in which we humans typically have our most vivid dreams, is the spiny anteater, which has been seen as anomalous in that it has a very large brain relative to the animal’s size. This fact provides some confirmation for the parasitic-connection hypothesis, since the hypothesis predicts that for an animal that did not dream to have an effective memory that animal would need extra memory space for the parasitic connections.
The parasitic-connection hypothesis, if true, most strongly supports which one of the following?
(A) The animals with the smallest brains spend the most time sleeping.
(B) Immediately after a person awakens from normal sleep, her or his memory contains virtually no accidental associations between ideas.
(C) When a mammal that would normally dream is prevented from dreaming, the functioning of its memory will be impaired.
(D) Insofar as a person’s description of a dream involves meaningful associations between ideas, it is an inaccurate description.
(E) All animals other than the spiny anteater dream.
Humans have rapid eye movement when they dream and during these dreams the brain, as per the hypothesis, erases the parasitic connections. There's only mammal, the anteater, that don't have raid eye movement sleep and it has a very large brain size relative to its size.
Therefore, the anteater since it doesn't sleep would have a large brain size / memory space for it to have parasitic connections.
Nothing about animals with smallest brain is mentioned so option A is not supported.
Option B is irrelevant as nothing is discussed about what happens after someone wakes up after a normal sleep. Also what is normal sleep.
Impairment is not what hypothesis is talking about. C is wrong.
Option E is wrong for saying all animals dream. Nowhere in argument such a claim is made or suggested.
So, description based on 'meaningless - accidental associations between ideas' would be inaccurate. This makes sense.
IMO Answer D.
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Good Books to read prior to MBA