Physical controls are items put into place to protect facility, personnel, and resources. Examples of physical controls are security guards, locks, fencing, and lighting. The following answers are incorrect answers: Monitoring of system activity is considered to be administrative control. Identification and authentication methods are considered to be a technical control.
Logical access control mechanisms is also considered to be a technical control. Reference(s) used for this question: Harris, Shon (2012-10-25). CISSP All-in-One Exam Guide, 6th Edition (Kindle Locations 1280-1282). McGraw-Hill. Kindle Edition.