The word from Li-Young Lee's "From Blossoms" that has the most negative connotation is dust. Option B is correct.
A words connotation is related to the use of the word and its definition.
Dust is dirty and most oftentimes a nuisance, this gives it the strongest negativity of the options provided.
The word is foun in this part:
From laden boughs, from hands,
from sweet fellowship in the bins,
comes nectar at the roadside, succulent
peaches we devour, dusty skin and all,
comes the familiar dust of summer, dust we eat.
The theme of the poem is live you life to the fullest. It ecourages the reader to enjoy every day, hour, and minute, and savor all the good memories you make throughout life.