Following are the right matches of extensions and their benefits:
Match each ad extension with the benefit that it brings to a user’s ad experience.
Structured snippet extensions — Describing features of a specific product or range of products or services offered by the business before users click on the ad
Call extensions — Allowing mobile users to directly call a business
Callout extensions — Highlighting value-adding attributes of the business, products, or services to users
Sitelink extensions — Directing users to specific pages of a website