• Instructional query library (IQL)
• Paid features (beta)
• Query editor
• Instance info

The correct answer is: Query editor

Explanation: The Query editor UI component in AMC is the main workspace for analytics practitioners, used to author and execute SQL queries, as well as download the results.

Reference content: From the official Amazon documentation (AMC overview):

“The query editor is the day-to-day working area for analysts using AMC. Users author and execute SQL queries, download query results, and review performance within this interface.”