Which of the following netiquette rules are unique to online learning?

Do not post irrelevant or distracting messages in the chat box   

Make sure that the tone of your communication is respectful  

Do not use capital letters when writing whole words or sentences  

Think carefully about what you share with others 

All of the netiquette rules mentioned are applicable to online learning, but the rule "Think carefully about what you share with others" is more specific and unique to online learning. In an online learning environment, it is important to be mindful of the information and content you share with classmates and instructors. This includes avoiding personal or sensitive information, respecting others' privacy, and being cautious about sharing copyrighted material.