Answer: Click-to-call ad
Explanation:
From the question, we are informed that Lilla sees a search ad on her mobile phone for a restaurant and a button on the ad allows Jessica to click on the button and call the restaurant.
It should be noted that the above is a click-to-call ad. They are form of Google Ads that when someone clicks them, it calls the business directly rather than linking to the website of the business. They are important to marketing campaigns.
