It is A, a gloomy day. when u think of black clouds, its gloomy, almost like its going to rain. it cant be the sun is setting because when it sets, clouds are sort of pinkish.if the clouds are moving, that really has nothing to do with the sentance. i hope this answer has helped.
Answer:
alliteration, simile, and imagery
Explanation:
alliteration: slowly sinking
simile: crumbling LIKE pastries
imagery: visual
