Which type of access control is most concerned with the security of physical locations?

Physical access control is primarily focused on securing physical spaces and locations to protect sensitive areas, assets, and individuals. This encompasses various measures and strategies designed to prevent unauthorized access to facilities, including the use of locks, security guards, access control systems (like key cards or biometric scanners), and surveillance equipment. By controlling who can enter a building or a restricted area, organizations can mitigate risks associated with theft, vandalism, and other physical security threats.

In contrast, logical access control pertains to safeguarding computer systems and network resources, ensuring that users can only access information and systems they are authorized to. Network access control is specifically about managing access to network resources, while role-based access control centers on granting access rights based on users' roles within an organization. These types focus on virtual security rather than the physical environment, making physical access control the most relevant choice for the question at hand.