Answer: D. It compares the speaker's reflection to a predatory bird that haunts the speaker.
The simile is located in the following lines of the poem:
<em>My clouded reflection eyes me</em>
<em>like a bird of prey, the profile of night</em>
<em>slanted against morning. </em>
In these lines, we see that the author is comparing his reflection to a bird of prey. The implication is that both haunt him, and do not let go of him.