Final answer:
The client is experiencing role conflict when feeling overwhelmed with not having enough time for both their mom and children.
Step-by-step explanation:
Role conflict refers to when an individual experiences conflicting demands or expectations from different roles they fulfill. In this case, the statement that indicates the client is experiencing role conflict is option a. "I feel overwhelmed with not having enough time for my mom as well as my children." This statement suggests that the client is struggling to balance her responsibilities as a caregiver for her parent and her responsibilities as a parent to her children, resulting in role conflict.