Hey there!
Here is your answer:
The proper answer to this question is option A "cross-dresser".
Reason:
A cross-dresser is a term for men or women who do not alter
their genitalia but who live as members of the opposite sex.
Also....
Its not option B because a transsexual is a person that would want medical assistance to change into the opposite gender that they are. Its not option C because a transgender is a person that was one gender than changed into the another gender. For example a boy-->girl. Its also not option D because a homosexual is a person that is sexual attracted to a another person of the same sex.
Therefore the answer is A.
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit