Which of the following is a key feature of Responsive eCommerce Creative (REC) on Amazon DSP?

Responsive eCommerce Creative (REC) is designed for efficiency and performance. Its key feature is automatic optimization, meaning it dynamically selects the best combination of provided product ASINs and various ad elements (like headlines, images, and calls to action) to create the most effective ad variations for different placements and audiences. This automation aims to maximize campaign performance without requiring manual intervention for each permutation. The other options are incorrect because: "It requires manual creation of ads for each individual ad size supported by Amazon DSP" is false. REC's responsiveness means it automatically adjusts to various ad sizes and placements, reducing the need for manual creation of multiple ad versions. "It only supports single-product advertisements and cannot showcase multiple ASINs in one ad" is also false. REC is specifically designed to showcase multiple ASINs within a single ad unit, allowing advertisers to promote a range of products or product variations effectively.