A client is running a conversion campaign on Pinterest to drive online sales for its new product line. To track the effectiveness of the campaign and optimize for sales, it wants to ensure that the Pinterest Tag is correctly set up on its website. Which action should the media planner suggest to the client regarding Pinterest Tag implementation?

Installing the Pinterest Tag on all pages of the client's website is crucial for comprehensive conversion tracking. This ensures that all user interactions, from initial page views to add-to-carts and purchases, are captured, providing a complete picture of the customer journey. This full-funnel data is essential for accurate campaign optimization and retargeting. Tracking user interactions with product Carousel ads on Pinterest is a function of Pinterest's ad platform itself, not the tag's installation. Installing the tag exclusively on product listing pages or only on the homepage would severely limit the data collected, preventing a full understanding of user behavior and hindering effective campaign optimization for sales.