• 30-day
• 28-day
• 7-day
• 14-day

The correct answer is: 14-day

Explanation: The Amazon Ads attribution lookback window is 14 days for standard campaign reporting. This means conversions can be attributed to ad interactions (like clicks or views) that occurred within 14 days before the conversion event by default.

Reference content: From the official Amazon documentation – Custom attribution analysis – Amazon Marketing Cloud

“The standard ’14-day last-touch attribution’ is practiced in Amazon Ads standard campaign reporting. With the launch of custom attribution in AMC, advertisers now have the flexibility to define their preferred attribution approach in query analysis…”