The correct answer is a. interpersonal.
In this context, Laurie's tendency to scream and cry as a way to relieve her stress indicates that she may have unhealthy interpersonal relationships, particularly with herself and possibly with her grandmother during the stressful moments. The screaming is a manifestation of her inability to communicate her stress and struggles effectively.
While her intrapersonal relationships (how she relates to herself) could also be considered unhealthy due to her stress management issues, the primary focus of the question is on her interactions with others. Therefore, "interpersonal" relationships is the most fitting choice. The other options, "b. intrapersonal" and "c. bitter," do not directly represent the core issue about her stress management concerning her relationships with others.