Question

Which sentence includes an infinitive phrase used as a noun?

A. My goal in this essay is to share my views about a favorite sport.
B. I persuaded them that our idea was better.
C. The runner to watch is the one on the inside track.
D. I wrote to the author of my favorite book.

Answer 1

The sentence that includes an infinitive phrase used as a noun is:

A. My goal in this essay is to share my views about a favorite sport.

Step-by-step explanation:

There are two options with infinitive phrases: letters A and C. However, in letter C, the infinitive phrase "to watch" functions as an adjective, modifying "runner". Therefore, we can eliminate it. We are left with letter A. The infinitive phrase begins with "to share", and it comes after the linking verb "is". As we know, linking verbs can be completed with pronouns, nouns, adjectives - anything that gives information about the subject. In this case, the infinitive phrase completing the linking verb is functioning as a noun.