As the sender of information online, be sure that ________.

A) you provide all detail possible
B) the message is marked "Urgent"
C) your messages are meaningful and important to your audience
D) your messages use BCC lists

It is important to ensure that the messages being sent online are meaningful and important to the intended audience. Providing all details possible may not always be necessary or relevant, marking messages as urgent may cause unnecessary stress or urgency for the recipient, and using BCC lists is not always necessary or appropriate.