Select the theme that is best brought out of this passage from Frankenstein: But I have one want which I have never yet been able to satisfy; and the absence of the object of which I now feel as a most severe evil. I have no friend, Margaret: when I am glowing with the enthusiasm of success, there will be none to participate in my joy; if I am assailed by disappointment, no one will endeavor to sustain me in dejection. I shall commit my thoughts to paper, it is true; but that is a poor medium for the communication of feeling.

A.
Isolation—this passage illustrates how sad Walton feels about having no one to share his success or failure with.
B.
Obsession—this passage demonstrates how obsessed Walton is with new discoveries and wants the world to know about them.
C.
Revenge—this passage shows that Walton is angry about having no friends and wants to avenge his friend Victor's death.