Which of the following describes a method used to monitor confidential material or equipment being removed?

Video monitoring is an effective method for overseeing the removal of confidential material or equipment because it enables continuous visual surveillance of designated areas. This system involves the use of cameras to capture video footage, allowing security personnel to observe activities in real-time or review recorded footage later for any suspicious actions. By having a visual record, organizations can not only deter unauthorized removal but also facilitate investigations if any incidents occur.

In contrast, options such as intrusion detection systems primarily focus on signaling unauthorized access to a network or resource, rather than monitoring physical items being taken. Access control lists are related to restricting permissions and managing who can enter specific areas or access certain data, but they do not provide ongoing visual oversight. Physical barriers can prevent access to certain areas or items but do not actively monitor activities or provide evidence in the case of theft or removal. Thus, video monitoring stands out as the most relevant method for this scenario.