Doctor should be capitalized.
<span>The correct answer among the choices provided is:
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C. Here is a mug of hot, and creamy cocoa.
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A comma must be placed after the word "hot" because there are more than one adjectives used to describe "cocoa" which the adjectives modified.
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The author’s purpose is always going to be telling the reader to do, say something, or have an idea.
Run-on sentence
In prescriptive grammar, a run-on sentence<span> is two independent clauses that have been run together without a conjunction or punctuation mark between them. The picture is an example.</span>