Final answer:
Role ambiguity refers to the lack of clarity about expected behaviors in a role, and it is a term correctly describing such uncertainty, which is true. This concept is part of the larger study of social roles and how individuals manage their multiple roles in different contexts.
Step-by-step explanation:
Uncertainty about what behaviors are expected of a person in a particular position is indeed called role ambiguity. This term describes a lack of clarity about expected behaviors, which can lead to stress and confusion for individuals in their social or occupational roles. To clarify, a social role is a set of expectations for appropriate thoughts and behaviors of its members. When a person, like Mary, is juggling multiple social roles, such as employee, parent, volunteer, and caregiver, she is likely to encounter role conflict due to the competing demands of these roles. Sociologists like Erving Goffman have explored how people manage these social roles through what he termed dramaturgy, suggesting that individuals perform different roles depending on the social context and who is present, a concept linked to impression management. Therefore, the statement provided in the question is true: A. true.