Revoking the DELETE privilege ONLY on the specific critical table prevents accidental deletion of that table while still allowing the analyst to delete data from other tables where they have the appropriate permissions. Revoking DELETE on all tables or removing ACCOUNTADMIN is too restrictive, as the analyst needs to query and potentially modify other tables. Multi-factor authentication enhances security but doesn't directly prevent accidental deletions. MONITOR privilege is for observing, not preventing actions.