Enlarged brain ventricles are presumed to signify

a. an excess of dopamine activity

b. frontal lobe abnormalities

c. development of brain tissue

d. a deterioration of brain tissue

D). A deterioration of brain tissue.

Explanation:

As per the question, enlarged brain ventricles are supposed to signify 'a deterioration of brain tissue' that may lead to a situation of "Hydrocephalus" in which the ventricles expand to hold the excess fluid and therefore, compresses the various elements of the brain. This further leads to gradual 'deterioration of brain tissue' and shrinking of the brain and that further leads to increase pressure on the mind. Thus, option D would be the correct answer.

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