Correct option is D
The Internet is often referred to as the "Gateway of Information" due to its unparalleled ability to provide access to a vast amount of information globally. It connects billions of devices, allowing users to communicate, access data, and share information instantly. The other options, though related to communication, do not have the same breadth of information access as the internet:
(a) e-mail: While e-mail is an important tool for communication, it is not referred to as a gateway to vast information.
(b) Pager: Pagers were primarily used for sending short text messages in the pre-mobile phone era and are not a source of information.
(c) Cellular Phone: While smartphones today can access the internet, the phone itself is not the "gateway of information"; rather, it is the internet that provides the access.
