Which term describes someone whose physical, emotional, and/or romantic attraction is for people of the opposite sex?

The term that best describes someone whose physical, emotional, and/or romantic attraction is primarily for people of the opposite sex is heterosexual. Heterosexuality specifically refers to an attraction between individuals of differing genders, typically characterized as male-to-female and female-to-male relationships. This sexual orientation is one of the most common and is often seen in cultural norms and societal structures.

Lesbian and gay refer to sexual orientations where individuals are attracted to the same sex, with lesbian specifically pertaining to women attracted to women, and gay generally describing men attracted to men. Transgender refers to gender identity rather than sexual orientation, describing individuals whose gender identity differs from the sex they were assigned at birth. Recognizing the distinction between these terms is vital in understanding the diversity of human sexuality and gender identity.