Final answer:
A male letting a female pass through a door first is an example of chivalry or gentlemanly behavior that stems from traditional gender roles.
Step-by-step explanation:
A male opening the door and allowing a female to pass through first is an example of chivalry or gentlemanly behavior. This practice is rooted in social customs that define men's and women's roles, often reinforcing traditional gender norms where men are expected to display certain courtesies toward women. While some view it as a sign of respect, others critique it as a manifestation of gender roles and stereotypes.
The act described in the question is an example of gender roles and norms in society. It reflects the expectation that men should show chivalry towards women by opening doors for them or allowing them to pass through first.