Which of the following types of physical security attacks does a mantrap mitigate-?

Lock picking targets the lock mechanism itself, and a mantrap does not include any feature that hardens locks against picking attacks.

Impersonation involves pretending to be an authorized user, which a mantrap alone cannot prevent without an additional identity verification mechanism such as a guard or biometric reader.

Shoulder surfing involves visually observing someone entering credentials or PINs, which a mantrap does not address because it controls physical movement rather than visual access.

Tailgating occurs when an unauthorized individual follows an authorized person through a secured entry point without authenticating. A mantrap mitigates this by requiring the first door to fully close and lock before the second door can open, physically preventing more than one person from entering simultaneously - making it impossible to slip in behind someone else.