Read the excerpt from "Sea Fever" by John Masefield. And quiet sleep and a sweet dream when the long trick's over.

Assonance.

Explanation:

Assonance is a literary device that refers to the repetition of the vowel sounds in a line of poetry. In other words, it also refers to the repetition of the vowel sounds but not the consonant sounds, in close proximity.

The given line of poetry from John Masefield's "Sea Fever" uses the sound device of assonance. This is found in the repetition of the /i/ and /e/ sounds in the given line.

Thus, the correct answer is assonance.

not concrete, existing in thought or as an idea but not having a physical or concrete existence