Answer : 4. " Internet"
Explanation :

1. Internet means-

The Internet is a worldwide network of computers. The Internet consists of many local, regional, national and international networks. It is an international network of computers that interconnects millions of enterprises, government agencies, educational institutions individuals, etc. There is no denying the fact that the Internet has created a revolution in the way we live our lives. It has changed the way we communicate, do business and receive information, as well as our entertainment.

2. Network meaning is-

- A network is a group of computers that are interconnected through various devices so that they can communicate with each other.

Networks can be classified in many ways. One way to classify networks is based on the area they cover.

- A local Area Network (LAN) is a network in an office, building or premises.

- Metropolitan Area Network (MAN) is a network within a city.