Answer: letter B.
I do not kow how to explain it, I just did it in USA test prep and it was correct :D
Answer:
According to Coilins:
Explanation:
"
if you refer to the recesses of someone's mind or soul, you are referring to thoughts or feelings they have which are hidden or difficult to describe. There was something in the darker recesses of his unconscious that was troubling him."
Embankment refers to a long artificial bank built to retain water, or to support a road.
It appears to be unverified
