The correct response regarding how the motif of invisibility figures most prominently in the scene at Golden Day in Chapter 3 of "Invisible Man" is:
The narrator feels invisible among a crowd of African American people after spending time with the white man.
This reflects the overarching theme of invisibility in the novel, as the narrator grapples with his identity and societal perceptions after his experiences with figures of authority, highlighting his feelings of alienation and detachment from both the African American community and himself.