Final answer:
Marginalization most directly involves unequal access to resources and services, often resulting from systemic oppression and the privileges of other groups.
Step-by-step explanation:
The concept of intersectionality involves understanding how various forms of identity such as race, gender, and class intersect to influence an individual's lived experiences, particularly with regard to oppression and privilege. Among the options given, Marginalization most directly involves unequal access to resources and services, as it refers to the process through which certain groups are pushed to the margins of society, where they are likely to experience lesser access to resources, opportunities, and services. This marginalization is typically a result of systemic oppression, discrimination, and the privileges held by other groups.