Intrusion sensor performance is commonly evaluated using three key criteria: probability of detection, nuisance alarm rate, and vulnerability to defeat. Probability of detection measures how effectively the sensor identifies actual intrusions. Nuisance alarm rate refers to the frequency of false or unnecessary alarms, which can reduce trust in the system and lead to complacency among personnel. Vulnerability to defeat assesses how easily the sensor can be bypassed or compromised by an intruder. From a Human Resource and organizational management perspective, these factors are critical because they directly influence employee response, security awareness, and overall workplace safety. High false alarm rates may lead to reduced attentiveness among staff, while poor detection capability or high vulnerability can expose the organization to risks. Therefore, option D correctly represents the standard performance criteria.
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