Which shopper engagements will trigger charges for PLA campaigns in most cases?

The selected answer option is correct because, in most cases, click is the shopper engagement that triggers charges for Product Listing Ads (PLA) campaigns. Unlike impression-based pricing models, which charge advertisers simply for ad visibility, PLA campaigns typically operate on a cost-per-click (CPC) basis. This means that advertisers only pay when a shopper clicks on their product listing ad, indicating an active interest in the product. This click-based charging method aligns with the goal of driving traffic to the product page and ensures that advertisers are paying for actual engagement, rather than just visibility, making it a more performance-driven and cost-effective approach for driving conversions.