Which of the following can be used as an equipment theft deterrent?

Screen locks prevent unauthorized access to data on a device but do not physically prevent the device itself from being picked up and removed.

GPS tracking enables recovery of stolen equipment after the fact but does not deter or prevent the act of theft from occurring.

A cable lock uses a hardened steel cable and locking mechanism to anchor laptops, desktops, or monitors to a desk or other fixed object, making the hardware physically impossible to remove without a key or cutting tool. Because the device cannot be easily taken, cable locks serve as a direct and immediate physical deterrent to opportunistic theft. They are the standard low-cost physical security control recommended for protecting portable and stationary equipment in shared or semi-public spaces.

Whole disk encryption protects data confidentiality if a device is stolen but has no effect on preventing the physical removal of the hardware.