The correct answer is D, Safari. Safari is a web browser, not a web search engine. A web search engine is a software system that is designed to search for information on the World Wide Web. Some of the most popular web search engines include Google, Bing, and Yahoo. Web browsers are software applications that allow users to access and view web pages. Some of the most popular web browsers include Google Chrome, Mozilla Firefox, and Microsoft Edge.
Baidu is a Chinese web search engine that is the most popular search engine in China. Google is an American multinational technology company that specializes in Internet-related services and products. Bing is a web search engine developed by Microsoft. Yahoo is an American multinational technology company that provides a variety of Internet-related services and products. Safari is a web browser developed by Apple Inc.