Which line from the text demonstrates an inverted syntax?
in the deserted, moon-blanch'd street,
how lonely rings the echo of my feet!
those windows, which i gaze at, frown,
silent and white, unopening down,

Here's an example of inverted syntax:
 Normal syntax: Jane ate a cake.
 Inverted syntax: A cake Jane ate.

I think that the second line probably has inverted syntax, since you can re-write it as shown below:
 Sentence given (inverted): How lonely rings the echo of my feet!
 Sentence re-ordered (normal): The echo of my feet rings lonely.

EDIT:
I think I made a mistake above ^
I believe its actually line three, which can be re-ordered to read: I gaze at those windows which frown

The answer is B. How lonely rings the echo of my feet! (hopes this helps) 

How do you type these long ridiculous nguestion. oh, you copy n pasted. i see you. and that answer to the question is gonna be a quess from me. answer=c