admin.conversations.rename belongs to Slack's Admin API and is available for Enterprise organizations. Current Slack documentation requires a user token containing the appropriate administrative scope—in this case admin.conversations:write. The application must be installed at the Enterprise-organization level rather than merely in one individual workspace. An Org Admin is therefore the appropriate role among the listed choices. Slack currently allows an Enterprise Org Admin or Org Owner, subject to applicable Channel Management permissions, to install an app requesting relevant Admin API scopes. Because Org Owner is not presented as an option, B is the correct selection. A Workspace Admin's authority ordinarily applies to a specific workspace and does not provide organization-level authorization for Admin API operations that span an Enterprise organization. Compliance Admin and Audit Log-related roles address different governance or monitoring responsibilities and do not provide the channel-management authorization required here. Current Slack documentation additionally emphasizes that the installing Org Admin or Owner must possess the applicable Channel Management permissions, including access to the relevant public/private channel types. This maps directly to APIs for Managing Your Slack, particularly Admin APIs, Enterprise-level OAuth installation, administrative scopes, and organization-wide channel management.