Why would an advertiser use sitelinks?
To let customers click a button to call the business
To showcase customer reviews with high-quality survey data
To show a link that sends people to the app store or starts downloading an app
To give customers quick access to multiple pages of an advertiser’s website
Explanation:
Sitelinks can take people to specific pages on your site—your store hours, a specific product, or more. Sitelinks will show in a variety of ways depending on device, position, and other factors. When your sitelink extension appears with one of your ads on a computer, it shows 2 to 6 links, which may appear on the same line or fill up to two lines of your ad.
Read more here:
https://support.google.com/adwords/answer/2375416
