I believe the correct answer is D. It builds a sense of anticipation and mystery.
This is the moment when Lady of Shalott is about to make her fatal transgression and activate the curse. She is never supposed to look directly outside the window. Yet, here she is very intrigued by what she thinks is there - the young and handsome knight Lancelot.
Menacing= threatening
Interminable= Continuous or never-ending
Exuded=To give off a smell or attitude
Noxious=poisonous
Vast=huge
Monotonously= Repeating the same actions so that it becomes boring.
Melancholy= Deeply sad
Inhabited=Lived in or on
