Final answer:
Marco's experiences of being Hispanic, gay, and in his late 30s are shaped by a concept called intersectionality, which describes the interplay of various social identities and systems of oppression.
Step-by-step explanation:
The concept that addresses Marco's experiences as a Hispanic gay man in his late 30s is intersectionality. Intersectionality recognizes that individuals can belong to multiple categories of identity, such as race, ethnicity, gender, age, sexual orientation, etc. The experiences of Marco, who grew up in Puerto Rico and identifies as Hispanic and gay, are affected by his ethnicity as well as other categories such as sexual orientation and age. The concept that describes the overlapping and intersecting social identities and related systems of oppression, domination, or discrimination is called intersectionality. It acknowledges that individuals can face multi-dimensional aspects of humanity and experiences influenced by their racial, gender, age, class, sexuality, disability, and ethnic categorization.