Final answer:
A transgender person is an individual who identifies with a role that is different from their biological sex.
Step-by-step explanation:
A transgender person is an individual who identifies with a role that is different from their biological sex. Transgender people's sex assigned at birth and their gender identity are not necessarily the same.
While determining the size of the transgender population is difficult, it is estimated that a significant number of adults and high school students in the US identify as transgender. The term "transgender" does not indicate sexual orientation or a particular gender expression.