C.) Nan invited my sister and me to her party.
Answer:
A.
Explanation:
It explains what a formal meeting is like, and a few of the rules you must follow.
The sentence that does not contain any errors in comma usage is option C. Mick introduced me to his dog, a golden retriever. The word "dog" and the phrase "a golden retriever" is separated by a comma because the phrase "a golden retriever" is an example of an appositive phrase. An appositive is a phrase that is used to rename or describe the noun it precedes. In this case, the phrase "a golden retriever" renames the word "dog". Appositive phrases which are additional information should always be set off by a comma or a pair of commas.
The answer is A. sewing.
A gerund is a verb that has -ing at the end of it, so sewing is the correct answer! Although gerunds use verbs, they can also work as nouns, like it does here.