What happens when a tracking tag is placed on an advertiser's page?

When a tracking tag is placed on an advertiser's page, it primarily serves the purpose of tracking user interactions and behaviors across the website. The correct choice refers to how the tracking tag can execute a 302 redirect, which is a temporary redirect that directs users to a different URL. This process allows the tracking tag to communicate data, typically to cookie mapping services or third-party vendors.

This functionality is important because it enables advertisers to gather analytics about user actions, enhance ad targeting by linking user behavior to specific profiles, and ensure effective remarketing strategies. This data-driven approach enhances the overall effectiveness of online advertising campaigns.

The other options have distinct purposes that do not accurately describe the role of tracking tags. For instance, sending user data via email, while feasible, is not a fundamental function of tracking tags. Boosting organic search rankings pertains to search engine optimization (SEO) methods rather than tracking methodologies, and tracking only mobile users limits the tag's scope, as tracking tags are designed to capture data across both desktop and mobile environments.