Sexuality, as described by Crawford, is

A) a biological drive that is instinctive to all human beings.
B) always the same in all cultures.
C) shaped by gender and culture.
D) based only on internal factors such as personality, preferences and values.

Crawford argues that sexuality is shaped not only by biology, but also by gender and culture, as they influence social norms, expectations, and experiences related to sexual behavior and identity. Therefore, option C is the most accurate choice. Options A and D oversimplify the complexity of human sexuality. Option B is incorrect because there is vast cultural diversity in attitudes and practices related to sexuality.