Which figure of speech does Hughes primarily use
in the poem?

The figure of speech which Hughes primarily uses in the poem is:
This refers to the figure of speech which makes use of direct comparisons using "like" or "as" to compare dissimilar things.
With this in mind, we can see that from the complete text, we can see that there is the use of simile as the writer compares several items and objects to dissimilar things.
Read more about simile here:
https://brainly.com/question/2416704