• AMC will accrue and retain up to 90 days of events
• AMC will accrue and retain up to 1 month of events
• AMC will accrue and retain events in perpetuity
• AMC will accrue and retain up to 12.5 months of events

The correct answer is: AMC will accrue and retain up to 12.5 months of events

Explanation: The maximum window over which AMC can accrue Amazon Ads events is 12.5 months. This means AMC will collect and retain events (such as impressions, clicks, and conversions) for up to 12.5 months, allowing you to query, report, and analyze historical ad data spanning just over a year.

Reference content: From Amazon documentation – Customer Long-Term Value playbook

“Long-term: Since AMC only allows the maximum long-term window of one year …”

And in other official resources, AMC’s maximum event retention window is periodically cited as 12.5 months specifically for advertising events.