Final answer:
Richard's behavior of indulging in food and drink after a stressful exam is an example of the self-indulgence coping strategy, a form of emotion-focused coping. Correct option is C.
Step-by-step explanation:
Richard's behavior illustrates the coping strategy of self-indulgence. This strategy is a type of emotion-focused coping, where a person engages in behaviors that provide temporary relief from distress but do not address the underlying problem.
In Richard's case, eating a jumbo-size pizza and drinking two six-packs of beer are ways of indulging himself to distract from the distress of potentially failing his calculus exam.