The correct answer is (d) Vinton Cerf.
Vinton Cerf is an American computer scientist who is known as one of the “fathers of the Internet”. He is credited with co-developing the Transmission Control Protocol (TCP) and Internet Protocol (IP), which are the foundation of the Internet. He is also the co-founder of the Internet Corporation for Assigned Names and Numbers (ICANN), which is responsible for managing the Domain Name System (DNS).
Charles Darwin is a British naturalist who is best known for his theory of evolution. He is not considered to be the father of the Internet.
Tim Berners-Lee is a British computer scientist who is credited with developing the World Wide Web. He is not considered to be the father of the Internet.
Robert Cailliau is a Belgian computer scientist who is credited with co-developing the World Wide Web with Tim Berners-Lee. He is not considered to be the father of the Internet.