Which of the following is the BEST way to validate whether controls to reduce user device vulnerabilities have been implemented according to management's action plan?

Surveying device owners provides subjective feedback on whether they *think* controls are implemented or effective, but it does not offer objective proof of actual vulnerability reduction.

Rescanning the user environment provides objective, technical evidence of whether vulnerabilities on user devices have actually been reduced or remediated as a result of the implemented controls. This direct verification offers concrete proof of the controls' effectiveness in meeting the action plan's technical objectives.

Requiring annual policy acceptance ensures users acknowledge rules, but it does not validate the technical implementation or effectiveness of controls designed to reduce device vulnerabilities.

Reviewing awareness training assessment results measures user understanding, which relates to human-centric vulnerabilities, but not the technical reduction of device vulnerabilities through controls.