Select the Meaning of the Underlined Word in the Sentence

Select the meaning of the underlined word in the sentence.
The hospital doesn′t discriminate on people based on their race, gender, religion, or social class.

A) the direction of a person's sexual interest
B) being part of a nation whether by birth or naturalization
C) the classification of people as male or female
D) the socially constructed roles and behaviors that a society typically associates with males and females