Final answer:
Heteronormativity reinforces traditional gender norms, impacting parental leave policies by perpetuating the expectation that mothers, rather than fathers, should be the primary caregivers.
Step-by-step explanation:
Heteronormativity is the assumption that heterosexuality is the sole acceptable sexual orientation. It reinforces traditional gender norms and impacts parental leave policies by perpetuating the expectation that mothers, rather than fathers, should be the primary caregivers. This leads to unequal access to parental leave and reinforces gender inequalities. For example, in many countries, maternity leave policies are more extensive and generous compared to paternity leave policies.