Answer:
ARPANET is the earliest version of the present-day Internet.
Step-by-step explanation:
ARPANET is the type of network that is used before the Internet in the year 1967. It was advanced in the control of U.S ARPA(Advanced Research Projects Agency). After the year of 1980, it was given to the military network for the protection of the data network but after all, it is for the small area network and the Internet is the World Wide network.