"While with the term Internet we identify a plethora of concepts, from a technical perspective it is well defined. Which of the following definitions is correct?" $q,$

"the Internet is a network of networks, an infrastructure upon which services, like the World Wide Web, are delivered"

"the Internet is a service, an infrastructure upon which the World Wide Web is delivered"

"the Internet is the World Wide Web. Hypertext, the cross$-$referencing feature, is a core feature of the Internet"

$$ "the World Wide Web is an infrastructure upon which Internet services, like WhatsApp, are delivered"