The correct answer is letter A
It is a characteristic attributed to living beings who are attracted either physically, aesthetically or emotionally to another living being that has the same biological sex and the same gender as yours.
This characteristic is also one of the main categories with regard to the sexual orientation of individuals, alongside bisexuality, pansexuality, heterosexuality and asexuality.
In general, homosexuality as a sexual orientation is characterized as a kind of pattern where a person can live affective and sexual experiences with another person who is mainly or exclusively of the same sex as him.