Answer:
The author uses the long-line structure.
Step-by-step explanation:
Free verse poem is a poem which has no particular rhyme or rhythm. The author Allen Ginsberg’s in the poem "A Supermarket in California" uses long line structure. He uses free verse poem. The long-line structure imitates stream-of-conscious thought.
Stream of conscious means when one image leads to other. In the poem he uses this in a poetic style. The poem is about a guy who walks on the street, goes to supermarket and looks at people. While doing this he also calls upon a guy, Walt Whitman, who is also an outcast like the poet.