Store visits are modeled using GPS, Wi-Fi, and network data from opted-in, signed-in users.

• Interaction with a location extension or affiliate location extension
• Interaction with an online ad then a visit to the physical store location
• GPS, Wi-Fi, and network data from hundreds of millions of opted-in, signed-in users
• Third party vendors that provide data from hundreds of millions of opted-in, signed-in users

The correct answer is: GPS, Wi-Fi, and network data from hundreds of millions of opted-in, signed-in users

Explanation: Google harnesses the strength of its diverse product suite, ensuring seamless interconnectivity. This cohesion allows for a comprehensive understanding of user behavior. Specifically, non-Google Ads data such as GPS, Wi-Fi, and network signals, gathered from hundreds of millions of users who have opted-in and are signed-in, inform the modeling of store visits. This aggregated data ensures a richer, more accurate insight into user interactions.