Final answer:
Emile self-identifies as female despite being assigned male at birth, prefers female pronouns, and is undergoing hormone treatments, indicating that Emile is a transgender person (option D).
Step-by-step explanation:
Given that thirty-year-old Emile was born male but self-identifies as female, uses female pronouns, and is taking hormone treatments to develop breasts, Emile can most likely be classified as a transgender person. The term transgender refers to individuals who identify with behaviors and characteristics different from their natal biological sex. In Emile's case, she was assigned male at birth but identifies and presents as female.
This is distinct from the term cisgender, which describes individuals whose gender identity and gender expression align with their sex assigned at birth, and from sexual orientations such as asexual, bisexual, or homosexual, which refer to romantic or sexual attraction, not gender identity.