Which group scenario is most likely to foster normative social influence?

The correct choice situates a specific group dynamic that enhances the likelihood of normative social influence. Normative social influence occurs when individuals conform to the expectations of a group to gain acceptance or avoid disapproval. In the scenario involving a group composed entirely of females from the same university, there is a strong potential for shared norms and values that align with the specific culture and social dynamics of that institution.

When members belong to the same demographic background, they often have similar experiences, beliefs, and attitudes, which can create a unified expectation for behavior. This homogeneity strengthens social bonds and increases the pressure on individuals to conform to the group's norms to maintain harmony and acceptance. As a result, members may adjust their views or behaviors to align with those perceived social norms, illustrating normative social influence effectively.

The other scenarios, while they present interesting group characteristics, do not emphasize the same potential for conformity due to social norms. For instance, having members with expertise on cancer might promote informational social influence, where individuals rely on the knowledge of others to make decisions rather than conforming to social pressure. Similarly, a group spokesperson or a diverse socioeconomic background might not create a cohesive expectation for behavior, diminishing the likelihood of normative social influence in those contexts.