Based on the community discussion and Snowflake documentation, an account administrator (ACCOUNTADMIN role) in the Data Exchange administrator account can perform the following tasks: Add or remove members (A) and Approve or deny listing approval requests (C). These are explicitly mentioned in the documentation and confirmed by multiple community members with high upvotes. Option B (Delete data categories) is not listed as a default administrator privilege. Option D (Transfer listing ownership) and Option E (Transfer ownership of a provider profile) are not mentioned as core administrator tasks in the provided discussion or documentation references.