Which term is used for having emotional, romantic, or sexual attraction to someone of the same sex?

The term "gay/lesbian" specifically refers to individuals who experience emotional, romantic, or sexual attraction to others of the same sex. This term encompasses both gay men and lesbian women, signifying a shared identity within the LGBTQ+ community. Being gay or lesbian is an integral part of someone's sexual orientation, which is distinct from their gender identity or other sexual orientations.

The other terms provided represent different concepts:

• "Transgender" refers to individuals whose gender identity differs from the sex they were assigned at birth, rather than their sexual orientation.

• "Heterosexual" describes individuals who are attracted to the opposite sex, which does not fit the context of attraction to someone of the same sex.

• "Bisexual" refers to individuals who have emotional, romantic, or sexual attractions to more than one gender, which does not specifically denote attraction solely to the same sex.

Thus, "gay/lesbian" is the most accurate choice for describing the attraction to someone of the same sex.