A marketer for a retailer wants to link online ad spend to physical results. What specific measurement should they implement to build data strength?

To link online ad spend to physical results, the marketer should implement store sales measurement. This directly tracks how online advertising influences in-store purchases, providing a clear return on ad spend (ROAS) for physical locations. Target impression share is a bidding strategy focused on visibility, not physical sales. Sitelink descriptions are ad extensions that enhance ad content but don't measure sales. Maximize clicks is an automated bidding strategy aimed at driving traffic, not specifically measuring offline conversions. Store sales measurement offers the most direct and actionable data for optimizing online campaigns for offline impact.