The sentence that correctly explains the pun in the sentence and the words on which it is built is the following one: Comma sense- a play on the phrase common sense.
Explanation:
The sentence above is talking about an English teacher, a person who has studied grammar and teaches it for a living. What is more, the person describing this teacher is saying that she is practical. That is why she has a lot of common sense. Therefore, the pun lies on the spelling of this phrase, "common sense", because instead of writing "common", the writer used "comma", which has a similar pronounciation. Besides, a punctuation mark such as a comma is part of the scope of study of an English teacher.
You want your information to be as factual as possible, and to have less opinions inside. If the author previously had been in the field of expertise, or has studied it to a certain degree, then they have the qualification to talk about the field.
This article is mainly about how writing effects people by how it can help their voices be heard and how you can find what others are going through and you can connect to a pice of writing through an emotional way.