Read the sentence.When at the beach, Carina is often applying sunscreen so that she will not go home with burning skin.

In “is often applying,” applying is part of the verb phrase “is applying,” so it functions as a verb. In “burning skin,” burning describes the kind of skin, so it functions as an adjective. Therefore, the correct choice is C: “applying” is a verb that functions as a verb, and “burning” is a verb that functions as an adjective.

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