______ gives marketers insight into how their non-Amazon marketing channels across search, social, video, display, and email impact shopping activity and sales performance on Amazon.com.

The correct answer is Amazon Attribution because this tool provides marketers with insights into how their non-Amazon marketing channels—such as search, social media, video, display, and email—affect shopping behavior and sales performance on Amazon.com. By tracking and analyzing the impact of external marketing efforts, Amazon Attribution helps advertisers understand the contribution of their various campaigns to overall sales on the platform. This allows for more informed decision-making and optimization of marketing strategies to enhance effectiveness across multiple channels.