<span>The sentence that does not contain any errors in comma usage is A. Sam ate his breakfast, three pancakes, rather slowly. In B, there should be a comma before the store owner, and after if, because that is an appositive phrase describing the subject. In C, the goalie should be separated from the rest of the sentence by two commas. In D, there should be a comma before a children's lullaby. </span>
I think the correct answer is the first option. The novel form is most closely related to poetry writing form. Novel are fictional stories that are lengthy while poetry can be fictional or non-fictional and are written relatively shorter. Both of them narrates a story in an artistic form.
It's very cheap is a sentence. If only the courage to fail is underlined, however, then it is a noun phrase, and functions as the subject of this sentence.
