How can are marketing list help a Smart Shopping campaign?

Remarketing lists are crucial for Smart Shopping campaigns because they allow Google's automated bidding and targeting systems to focus on users who have previously interacted with your website or app. These users have demonstrated prior interest, making them significantly more likely to convert (i.e., make a purchase) compared to new users. By leveraging remarketing lists, Smart Shopping campaigns can optimize ad delivery and bids to re-engage these high-intent audiences, improving campaign efficiency and return on ad spend. The incorrect option is wrong because Smart Shopping campaigns do not use traditional keywords; they rely on product data feeds and Google's machine learning to determine relevance.