Identify the complete predicate in the sentence.
a. dad and david
b. dad and david sat
c. sat in the back
d. in the back

C. sat in the back.

Explanation:

A sentence is made up of two halves- a complete subject and a complete predicate. The complete subject consists of the subjects in the sentence, the nouns that the sentence refer to. The complete predicate consists of the remaining words that doesn't being with the complete subject. This will include even the verbs and the other forms of tenses.

So, from the options in the question, the complete predicate is -

C. sat in the back.

- "a nonrestrictive clause functions as a modifier to a noun (that is an object, person or concept). these clauses can be described by the following three options: it is set off by comas, it contains a subject and a verbs and it adds nonessential information to the sentence.

for example, in "here is bill gates, who confounded microsoft software company" we can identify "who confounded microsoft software company" as a nonrestrictive clause modifying the noun bill gates. this clause can be describes as a nonrestrictive clause because it is separated by a comma, it adds nonessential information to identify who bill gates is and it must contain both a subject (who) and a verb (confounded)."

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