In this case, Diane has engaged in the Problem-focused coping of stress.
A problem-focused coping is a type of coping mechanism which helps tp tackles the problem or the stressful situation that is causing the stress thereby, directly reducing the stress.
- Here, the stress is caused by trouble meeting potential partners, the coping mechanism employed by Diane is problem-focused coping because she want to solve the problem of not meeting a suitor.
Therefore, in this case, Diane has engaged in the Problem-focused coping of stress.
Read more about problem-focused coping:
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