Answer:
D. Search.
Step-by-step explanation:
Google search engine is a engine used in browsers to seek of information related to the search values inputted by the user. This search engine is used in varieties of browsers like google chrome, mozilla firefox, phoenix etc, this is because it has a wide range of Google community web servers to get information.
Google Display ads value proposition is an advertising platform that takes advantage of the enormous google community on the internet of advertise client products and services across thousands of websites.
It uses the intent of the costumer, machine learning and performance of a website to advertise products, it does not need a search component since it is advertised automatically on an active website.