Which of the following statements is an example of metacommunication?

1) "Lets introduce ourselves one at a time."
2) Don't call me names!"
3) I think we should take this vote to the Board."
4) Let's agree to not discuss old issues today."

http://www.reference.com/world-view/meta-communication-one-example-e974ccbeed96bec2

What do you think?

I think it is "Let's agree to not discuss old issues today."

Metacommunication is the process of communicating about the manner in which group members communicate.

I agree.

Metacommunication refers to communication about communication itself, in which individuals express their thoughts, opinions, or intentions related to the ongoing conversation. In the given statements, the example of metacommunication is:

Statement 4) "Let's agree to not discuss old issues today."

To identify this, you can consider that metacommunication involves discussing the way communication should be conducted or setting rules for the conversation. In this statement, the speaker is suggesting an agreement to avoid discussing old issues, indicating a rule that they would like to establish for the current conversation.