Answer: Add and remove members., Approve and deny listing approval requests.

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.

Author: LeetQuiz Editorial Team