The correct answer is: B. Internet
A server is a computer that provides services to other computers, such as file storage, email, or web hosting. A LAN (local area network) is a network that connects computers within a limited area, such as a home or office. A MAN (metropolitan area network) is a network that connects computers within a city or metropolitan area.
The Internet is a global wide area network that connects computer systems across the world. It is a network of networks that consists of millions of private, public, academic, business, and government networks, of local to global scope, that are linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries an extensive range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web (WWW), electronic mail, telephony, and file sharing.
The Internet is a super-network or meta-network because it connects many different networks together. It is a global network that allows people to communicate and share information with each other.