My friend John, who owns a chocolate Lab puppy, is getting ready to leave for a trip. uses commas to separate a nonrestrictive modifier. Thus, option C is correct.
A modifier is termed as the information or a piece of additional information about a noun, pronoun, or adjective that is given about the sentences.
My friend John, who owns a chocolate Lab puppy, is getting ready to leave for a trip.in this sentence, the use of who owns a chocolate Lab puppy is a non-restrictive modifier, which means that the sentence would have been fine even if we had not used that information.
Like My friend John is getting ready to leave for a trip. but adding that modifier was just giving us extra information about John. Therefore, option C is the correct option.
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