Answer=D
Options A,B and C are Homonyms in that they have the same exact pronunciation.
D is an example of a near homonym. Adapt and Adopt sound similar, but do not have the exact same pronunciation.
I would suggest working on word choice, since you used the same words many times in the essay.
That is the answer. :)
An attitude or an emotion attached to a word's meaning is called Connotation.
Denotation is the literal meaning of the word, while origin and definition are unrelated.