When meeting her brother's new girlfriend, gemma is disappointed by the lack of enthusiasm allie exhibits. gemma is relieved to learn from calvin that allie is distracted by a big exam the next morning, information that allows gemma to engage in a. rumination b. reappraisal c. emotional labor d. the fallacy of approval.

B) Reappraisal

Explanation: Reappraisal is the method of evaluating something again in the same or different manner. The repetition in appraisal of something is done to extract more clear result and remove negative factors from the judgement.

In the mentioned case, Gemma is not happy with the behavior shown by Allie at first as she lack the passion in meeting .Based on this situation she evaluates Allie with some negative factors , but the factors are removed when she knows the reason behind Allie's behavior.Thus she re-evaluated her by eliminating the incorrect assumptions and became pleased.

Other options are incorrect because rumination is focusing on the source of stress. Emotional labor is control the feeling to complete the job work.Fallacy of  approval is the faulty believe of getting approved or permitted.

Thus , the correct option is option(B).