Which best describes 'incident count' as a metric?

• A. The number of alarms triggered but ignored.
• B. The number of doors opened without authorization.
• C. The number of training sessions conducted.
• D. The number of security incidents over a given period.

Answer: (D)

Incident count is the total number of security incidents that occur within a defined period. It measures how often incidents happen, providing a simple way to see frequency and trends over time. The option describing the number of security incidents over a given period matches this idea exactly, so it’s the best description. Other options point to related but different concepts: counting alarms triggered but ignored focuses on alerts and response quality rather than the total incident tally; counting a single incident type (like unauthorized door openings) reflects a specific event category, not the overall incident count; counting training sessions measures activity unrelated to incidents.