"Crayon" is a false cognate because, while it looks just like the English word for crayon, it means "pencil" in French.
Answer:
Vous
Explanation:
In French, "vous" is the formal you, but it's also the plural you. So, while "tu" is used for informal settings, like chatting with a friend or classmate, it is a singular pronoun.
Therefore, when you are addressing a group or multiple people, vous should be used.