The correct answer is (b) 2001
Explanation:
The popular computer scientist Mr. Michael K. Bergman has coined the term “deep web” in the year 2001. This invisible web uses the encrypted browser and search engines and so is not indexed by standard search engine.
Deep Web: The deep web refers to parts of the Internet not fully accessible through standard search engines like Google, Yahoo, and Bing. The deep web includes pages that were not indexed, fee-for-service (FFS) sites, private databases, and the dark web.
