Which statement best describes how the internet evolved? 

The internet emerged in the commercial world in the 1980’s following the US military’s adoption of TCP/IP in 1983. 

The internet evolved from a military to a research to a commercial based network. 

The internet remained primarily a research based network and was only commercially adopted in 2000 when the world wide web was conceived. 

Internet service providers provided the services necessary for military based networks to evolve
into research and education based networks.