How would "in a station of the metro" change if the bough was bright and lively rather than wet and black? a.)the station would seem cheerier. b.)the poem would not be considered imagist. c.)the people would seem less pleasant. d.)the poem would no longer be a hokku.

The answer is B.)The poem would not be considered imagist. In poetry, imagism embraces directness of presentation and economy of language that are the main characteristics of modernism in literature. If you change the mood represented in this poem, you will also change its structure and it will be perceived differently than it was. So, it is better to say that it would lose its imagism characteristics if you change the dark tone into the light one.