SAT Question ae439895: Form Structure And Sense answer and explanation

English - Form Structure And Sense - Subject Verb Agreement
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In her 1983 book The Managed Heart: Commercialization of Human Feeling, sociologist Arlie Russell Hochschild first explored at length her conception of a “sociology of emotions”—the idea that the various cultural and ideological frameworks a person has internalized (class, gender, political affiliation, etc.) ______ each emotional reaction that person has within a situation.
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Difficulty:Hard
Which choice completes the text so that it conforms to the conventions of Standard English?