The figure of speech used in this sentence is enjambment​.

Option (d) is correct.

Explanation:

• Enjambment​ is a figure of speech and it refers to incomplete syntax.
• If there is an incomplete syntax in a line then it is said to be Enjambment​.
• As the meaning runs from one line to another line in a piece of poetry.
• Line with Enjambment​ is never complete and does not convey a complete meaning.