Which of the following terms describes biological differences between males and females?

The term that describes biological differences between males and females is "sex." This concept refers to the physical and physiological differences, such as reproductive organs, chromosomes, and other biological attributes that differentiate males from females. While gender is often confused with sex, it actually refers to the social and cultural roles, behaviors, and expectations associated with being male or female in a given society. Therefore, "gender" encompasses the social constructs, while "sex" is strictly about biological categorization. The other options such as culture and identity relate more to social contexts and individual self-conception rather than the biological distinctions themselves.