Sentence Correction (SC) | Re: The human growth hormone, produced by the pituitary gland, is secreted

The human growth hormone, produced by the pituitary gland, is secreted during sleep in higher concentrations than whenawake .


A. during sleep in higher concentrations than when awake

B. when sleeping in higher concentrations than waking hours

C. in higher concentrations during sleeping than waking

D. in higher concentrations during sleep than during wakinghours

[color=#00a651] Hormone is higher during sleep than during waking hours. Makes sense. During X and During Y (both nouns - waking modifies "hours"
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