Answer:
Enjambment
Step-by-step explanation:
The poetical technique used in lines 16 through 18 of the poem quoted above is "Enjambment".
Along these lines, we can see that the technique used by the author is to finish a verse in flagrant disagreement with the syntax, with the intention of highlighting the words that were separated. In other words, the author's intention is to close a verse unexpectedly by highlighting the words shifted in the next verse. Thus, there is a syntactic union between one verse and another when separating words united in the same phonic group.