Read the excerpt from Sophia’s letter to the manager of an automotive shop. I bring my car to your shop often. This time, however, I am not happy with the service I got.Which is the best revision of the underlined portion of the sentence?

Because Sophia is writing a letter to a shop manager, a clear and professional tone is best. “I am dissatisfied with the service I received” expresses her concern more formally than “not happy” or “pretty angry,” so choice C is the best revision.

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