Use an affiliate location extension when promoting products or services available at retail locations you don’t own.

• When an advertiser sells products or services through business-to-business commerce
• When an advertiser sells products or services through a location they own directly
• When an advertiser sells products or services to other manufacturers
• When an advertiser sells products or services through locations they do not own

The correct answer is: When an advertiser sells products or services through locations they do not own

Explanation: For businesses that channel their goods through retail chains, the affiliate location extension is a game-changer. This feature directs consumers to nearby retailers that carry your products, aiding them in their purchase choices. Notably, it’s adaptable for search, Display, and YouTube networks. For manufacturers that collaborate with major retail outlets, this extension is invaluable, guiding shoppers to local establishments that stock their offerings.

Read more here: https://support.google.com/google-ads/answer/7178291