Answer:
I think it is C I don't see the need for using the punctuation marks
Singular noun is a noun that assigns to one thing, one person and one idea. Example: Boy, Girl, Father, Mother, Man, Doctor and so on.
Answer:
I think it would be "Who (knows) somebody that does tattoos?"
Answer: D) The rules of communication
Explanation: Conventions in language are tests in which students learn how to communicate properly. Understanding language conventions lets people know how language works, how to successfully convey their message as they speak or write, and how to listen and interpret. Therefore; they are the rules of communication.