Answer: The theme that is best conveyed by this quote is D. Outward appearances can be deceiving.
Explanation: The quote provided was taken from Chapter 15 from Mary Shelley's Frankenstein. Moreover, the words provided are pronounced by the monster in the book. In that way, the theme that the quote conveys is that outward appearances can be deceiving, that is to say that the way in which a person looks is not related to the way in which a person is, behaves or thinks, even though some people think they are related. In the case of the monster, most people despise him because of his appearance; however, no one gets to realize that his appearance does not really define who he is.