the question is incomplete , the complete question should be:
Which statement describes a VPN?
VPNs use open source virtualization software to create the tunnel through the Internet.
VPNs use logical connections to create public networks through the Internet.
VPNs use dedicated physical connections to transfer data between remote users.
VPNs use virtual connections to create a private network through a public network.
the correct answer is:
VPNs use virtual connections to create a private network through a public network.