Which of the following would cause a corporate-owned iOS device to have an Activation Lock issue?

A forgotten keychain password would prevent access to stored passwords and secure notes on the device but would not trigger an Activation Lock on the device itself.

Activation Lock is a security feature that links an iOS device to a specific Apple ID, and if an employee's personal Apple ID is used and not properly removed or managed when the device is recycled or reissued, the device will remain locked to that Apple ID.

An operating system that has been jailbroken modifies the device's software but does not directly cause an Activation Lock, which is an Apple ID-based security feature.

An expired screen unlock code would prevent access to the device but is distinct from Activation Lock, which is a deeper hardware-level lock tied to an Apple ID.