An instructor is conducting a virtual classroom session that also includes a chat room.

Use the administrator control panel in the virtual classroom client to cut off access for the irate user until the learner is calm.

Send the user a private chat message explaining the concept better and add a positive emoticon to calm the learner.

Reply to the class and ask the class to use appropriate netiquette when responding to any messages.

Rephrase the comment into an anonymous question in case other learners are confused and discuss as a group.