Final answer:
The statement is true; biological sex does not always align with a person's gender identity or expression, highlighting the distinction between sex and gender.
Step-by-step explanation:
The statement that a person's sex is determined by his or her biology is not related to his or her gender' is true. The terms sex and gender refer to two distinct concepts. Sex is a biological classification based on physical characteristics such as chromosomes, hormones, and reproductive organs. Conversely, gender is a sociocultural construct that includes the roles, behaviours, activities, and attributes that a given society considers appropriate for men and women. For instance, gender identity, which is a personal sense of oneself as male, female, both, neither, or somewhere along the gender spectrum, can differ from the sex assigned at birth, particularly in the case of transgender individuals. Cultural expressions of gender, like attire choices, can also vary significantly across societies, underscoring that gender is not universally tied to one's biological sex.