(A) Vnet
(B) NSFNet
(C) ARPANET
(D) None of these
🧠 Explanation:
- ARPANET (Advanced Research Projects Agency Network) was the first network that laid the foundation for the modern Internet.
- It was developed by the U.S. Department of Defense in the late 1960s to connect research institutions and share information.
- ARPANET introduced key technologies like packet switching and TCP/IP protocols.
- It officially transitioned into the Internet in the early 1990s, making ARPANET its origin point.