• To find a searchable list of AMC tables and fields available to query, including Amazon Ads events and tables uploaded by Iris
• To ensure minimum aggregation thresholds are met on all queries
• Iris should not consider using the instructional query library as it does not apply to advertiser uploaded inputs
• To save time and reduce errors when compared to writing custom SQL queries from scratch

The correct answer is: To save time and reduce errors when compared to writing custom SQL queries from scratch

Explanation: Iris should consider using the instructional query library in AMC because it provides pre-written, Amazon-authored SQL templates that help new users save time and avoid errors, compared to developing custom queries from scratch. These templates cover common analytics needs, include instructions and use cases, and follow best practices.

Reference content: From the official Amazon documentation (Instructional queries panel):

“The Instructional queries panel offers Amazon-authored sample queries, details on their use case, instructions for use, and guides for interpreting results. This enables rapid onboarding … saving time and avoiding errors associated with writing queries from scratch.”