Answer:Problem-focused coping strategy
Explanation:
Problem-focused coping strategy attacks the stressors by dealing with an issue at it core by tackling the cause so instead of dwelling at being stressed a person find a practical way to come out of the stress. The aim of this strategy is to get rid of what ever is causing the stress by finding resolutions to it.
Erica cut down her social life so that she can totally and completely focus on her exam so she practically deals with an issue of being too socially which may affect her exams by taking steps towards a resolution .