D. in higher concentrations during sleep than during waking hours
Just as in Option E, "awake" and "asleep" can be referred to HARMONE and hence the option is Wrong, why cannot in Option D, "during sleep" and "during waking hours" refer to HARMONE? Why are we assuming that in option D these adjectives are implicitly referring to HUMANS?
Just as in Option E, "awake" and "asleep" can be referred to HARMONE and hence the option is Wrong, why cannot in Option D, "during sleep" and "during waking hours" refer to HARMONE? Why are we assuming that in option D these adjectives are implicitly referring to HUMANS?
