The correct answer is A. A standard channel naming convention primarily improves organization and clarity for users. In Slack, channels are the structure through which work becomes visible and searchable. Without consistent names, users struggle to understand where work belongs, where to ask questions, and how to find existing channels before creating new ones. Naming conventions such as #help-, #team-, #proj-, #announcements-, or #ext- make the purpose of channels immediately recognizable. Option B may be a secondary benefit if the naming style reflects company culture, but branding is not the main reason to standardize channel names. Option C is partially related because better naming may reduce duplicate or unnecessary channels, but it does not technically prevent channel creation. Option D is incorrect because naming conventions do not show membership; channel member lists and profiles do that. The primary purpose is navigational clarity: users can quickly understand channel purpose, locate relevant work, and follow a predictable collaboration structure.

==========