Answer:
useless, in vain maybe
Explanation:
Morose means being sullen or ill tempered, so a morose person might think that all attempts are useless, probably in an ill tempered manner.
The answer is C because the other options are like opinions and C is a fact not an opinion.
Romeo compares Juliets beauty to the sun of dawn, he calls the moon a pale competitor for brightest illumination of the night
The gray room was awfully dull.
