Answer:
a. Role strain
Step-by-step explanation:
Role strain: The term role strain is defined as a conflict or tension that arises when an individual faces or encounters a single role consisting of multiple statuses. It usually occurs inside a single role i.e if a person finds difficulty in managing the responsibilities of a specific role in life.
Example: A mother has to do work related to her job and at the same, she has to prepare food for her child.
In the question above, role strain occurs when Mary tries to balance her existing and new responsibilities.