• traffic_event_type
• supply_source
• ad_product_type

The correct answer is: ad_product_type

Explanation: The ad_product_type field in the amazon_attributed_events_* tables identifies the type of Amazon Ads product responsible for each conversion event. It allows you to distinguish between conversions driven by Sponsored Ads (such as sponsored products, sponsored display, and sponsored brands) and those driven by Amazon DSP (represented as NULL in this field). Filtering or grouping by ad_product_type enables aggregation and comparison of conversion events for DSP versus the various sponsored ad products .

Official Reference URL: https://advertising.amazon.com/API/docs/en-us/guides/amazon-marketing-cloud/datasources/amazon_attributed_events_by_conversion_time