Angelo's mom worked as an editor for a publishing firm in New York City. New York City is the capital of the publishing world. Which sentence correctly combines the sentences using an appositive? Angelo's mom worked as an editor for a publishing firm in New York City, which is the capital of the publishing world. Angelo's mom worked as an editor for a New York City publishing firm that is the capital of the publishing world. Angelo's mom worked as an editor for a publishing firm in New York City, the capital of the publishing world. New York City was the publishing world capital and where Angelo's mom worked as an editor for a publishing firm.

The sentence that correctly combines the two sentences using an appositive is:

C. Angelo's mom worked as an editor for a publishing firm in New York City, the capital of the publishing world.

Explanation:

An appositive is a word or phrase immediately following and renaming another word or phrase. That means its function in this sentence is to give further information or an explanation about something that was just mentioned. Appositives should come after a comma or between commas, unless they are restrictive.

In this case, we need to combine the sentences below using an appositive:

1. Angelo's mom worked as an editor for a publishing firm in New York City.

2. New York City is the capital of the publishing world.

The purpose is to explain that New York City is the capital of the publishing world. All we have to do is eliminate the repetition by placing a comma where "New York City" is in the second sentence. With that, we will create an appositive explaining what we need:

- - Angelo's mom worked as an editor for a publishing firm in New York City, the capital of the publishing world.