Nearness of death will provide the best clue to an adult's mental ability. So the correct answer is d. nearness of death.
The mental status examination is a methodical evaluation of the patient's cognitive and behavioural abilities. It covers descriptions of the patient's outward appearance and general behaviour, level of awareness and alertness, motor and linguistic activity, mood and affect, thought and perception, attitude and insight, the examiner's reaction, and, lastly, higher cognitive capacities.
The clinical relevance of certain mental abilities including attentiveness, language, memory, constructional ability, and abstract reasoning is highest. The patient's narration of the illness's past will reveal a lot about their general demeanour, alertness, speech, activity, affect, and attitude.
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