To encourage repeat purchases from existing customers who bought products within the last year, which audience type should a brand use when promoting complementary products?

The correct answer is ASIN remarketing audiences because this audience type targets users who have previously interacted with or purchased specific products (ASINs) in the past. By using ASIN remarketing audiences, the brand can specifically reach customers who have bought products within the last year and promote complementary items to encourage repeat purchases. This approach is highly effective because it targets users who are already familiar with the brand's products and are more likely to be interested in additional items that complement their previous purchases. In contrast, in-market and lifestyle audiences are broader and less focused on previous purchasing behavior, making them less suitable for targeting existing customers with complementary products.