What's meant by a diurnal rhythm ? And accordingly, How can I solve the following physiology MCQ?

What's meant by a diurnal rhythm ? And accordingly, How can I solve the following physiology MCQ?
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1 Answer

Answer :

“Diurnal” is not a medical term. It’s just an English word. The opposite of “nocturnal.” https://www.dictionary.com/browse/diurnal
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Last Answer : answer:

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