Final answer:
The ABMSO ensures that secure storage areas with security systems are checked quarterly and the results are documented in a secure log. Therefore, the correct answer is option C.
Step-by-step explanation:
For secure storage areas equipped with intrusion detection systems or duress alarm systems, the ABMSO (Area Barred Material Security Officer) will ensure the system is checked quarterly; meaning, every three months. The results of these checks are documented in a secure log to maintain a record of security integrity. This secure log is typically controlled by the security office or personnel responsible for the oversight of the security systems, ensuring that only authorized individuals have access to the documented information regarding the security status of the storage areas.