Which VPN feature prevents man-in-the-middle attacks from copying and using the copied information to present an attacker as a legitimate user?

A) Data integrity
B) Anti-replay
C) Data confidentiality
D) Data authentication

B
Explanation: B) VPNs that provide anti-replay capabilities can prevent man-in-the-middle attackers from copying VPN traffic and later attempting to use the copied information to present the attacker as legitimate.