Final answer:
The term used to describe the biological differences between males and females is "sex." option c.
Step-by-step explanation:
In sociology, the term used to describe the biological differences between males and females is "sex."
Sex refers to the physical or physiological differences between males and females, including primary sex characteristics (reproductive system) and secondary characteristics such as height and muscularity. It is a biological category that helps differentiate males and females based on anatomical, chromosomal, and hormonal factors.
For example, visible genitalia, internal sex organs, secondary sex characteristics, chromosomes, and reproductive capabilities are all considered in determining the sex of a person.