3. Which of the following is NOT a network messaging program? A. Instant messenger B. E-mail C. Blog D. Online chat room

The correct answer is C. Blog.<br /><br />A blog is a type of website or online platform where individuals or groups can publish content, such as text, images, or videos. While blogs can be used for communication and interaction, they are primarily used for publishing and sharing information rather than direct messaging or communication between individuals.<br /><br />On the other hand, instant messenger (A), e-mail (B), and online chat rooms (D) are all network messaging programs that allow for direct communication and exchange of messages between individuals or groups.