Which message can be appropriately conveyed through IM? a disciplinary warning for excessive tardiness. the agenda for an annual meeting. praise for a colleague's presentation. detailed feedback on a colleague's proposal. an announcement about layoffs.

# Brief Explanations:<br />The appropriateness of using Instant Messaging (IM) for conveying a message depends on the formality and sensitivity of the content. Praise for a colleague's presentation is a positive message that can be informal and is normally conveyed through less formal means such as IM. Disciplinary actions, detailed feedback, announcements about layoffs, and agendas for annual meetings are generally more formal or sensitive and could require documentation or a more personal communication method.<br /><br /># Answer:<br />C. praise for a colleague's presentation.