Answer:
In circumstance number 3. "Raul is walking toward a business office, and when he gets there he opens the door for a woman and allows her to walk through ahead of himself, but then he walks through without holding the door for the man with whom the woman was having a conversation." Raul demostrated an example of benevolent sexism.
Explanation:
Sexism can be defined by actions that reflect a difference in the way a person treats another, considering their sex or gender. In this case Raul is making a preference by letting a women enter through the door before him, and yet not allowing the men she is talking to enter also. There is no reason why such difference should be consider according to the theories that defend for instance the equality among sexs or genders.