Marlon has found that when he gets sad, his girlfriend becomes particularly nurturing and tries to take care of him. while he does not particularly want to feel these emotions, the response it draws from his girlfriend demonstrates the function of emotions.

the response it draws from his girlfriend demonstrates the INTERPERSONAL function of emotions.

Explanation:

Interpersonal function of emotions refers to interactions that occur between two or more people. Interpersonal function of emotions refer to how other people's emotions affect us or the relationship we have within ourselves and with other people.

This is how our emotions mean to others and the relationships we have with them; through our everyday interaction we display emotions towards one another and they can have an effect on others such as Marlon's emotions have drawn him and his girlfriend closer as they interact in their relationship when Marlon is sad.