Which of the following would be the MOST appropriate physical security solution for the main entrance to a data center?

A. Mantrap

B. Biometric lock

C. Closed-circuit television (CCTV)

D. Security guard

Explanation:

A biometric device will ensure that only the authorized user can access the data center. A mantrap, by itself, would not be effective. Closed-circuit television (CCTV) and a security guard provide a detective control, but would not be as effective in authenticating the access rights of each individual.