Final answer:
Sexuality is distinct from both physical anatomy and gender, and encompasses a wide range of orientations and attractions that may not necessarily align with one's biological sex or gender identity.
Step-by-step explanation:
The question deals with the concept of sexuality, which is a subject within Social Studies. From the information provided and the understanding of sex, gender, and sexuality, the correct answer to the student's question is 'a. Sexuality is distinct from both physical anatomy and gender.'
Sexuality refers to a person's capacity for sexual feelings and their physical, mental, emotional, and sexual attraction to particular sexes or genders. This is separate from physical anatomy, which is the physical structure of the body and biological aspects such as chromosomes and hormones. It's also different from gender, which refers to the social and cultural roles, behaviors, activities, and attributes that a given society considers appropriate for males, females, and other gender identities.
Biological sex and gender identity may influence an individual's sexuality, but they do not solely determine it. Sexuality is a broader concept that can encompass various orientations, such as heterosexuality, homosexuality, bisexuality, asexuality, pansexuality, and other forms of attraction and desire, which are socially constructed and can vary widely among different individuals and cultures.