According to Charles Horton Cooley's theory, which of the following best exemplifies a primary group?
Explanation
Cooley's concept of a primary group refers to close-knit, intimate relationships characterized by personal and enduring connections. While redheads share a common trait, they do not form a primary group based on close personal bonds. Similarly, tourists and sales interactions lack the intimacy defining primary groups. A married couple, however, represents a primary group due to their deep, personal relationship.