Which of the following is a Dozen Deadly Error?

Which of the following is a Dozen Deadly Error?

• A. Carelessness in reporting
• B. Driving too slowly
• C. Not enough sleep/rest
• D. Relaxing too soon

Answer: (C)

Not getting enough sleep or rest is the one that fits a dangerous error pattern because fatigue directly degrades performance. When you're tired, your vigilance drops, reaction times slow, judgments become less reliable, and you miss important details or misread a situation. In high-stakes field work, those small lapses can lead to serious or deadly outcomes, which is why insufficient sleep/rest is highlighted as a Dozen Deadly Error. The other options describe poor practices, but they don’t carry the same consistently proven risk linked to fatigue. Carelessness in reporting, driving too slowly, and relaxing too soon can cause problems, but the clear, day-to-day impact of not sleeping enough is a fundamental safety hazard that undermines multiple cognitive and physical skills at once.

Not getting enough sleep or rest is the one that fits a dangerous error pattern because fatigue directly degrades performance. When you're tired, your vigilance drops, reaction times slow, judgments become less reliable, and you miss important details or misread a situation. In high-stakes field work, those small lapses can lead to serious or deadly outcomes, which is why insufficient sleep/rest is highlighted as a Dozen Deadly Error.

The other options describe poor practices, but they don’t carry the same consistently proven risk linked to fatigue. Carelessness in reporting, driving too slowly, and relaxing too soon can cause problems, but the clear, day-to-day impact of not sleeping enough is a fundamental safety hazard that undermines multiple cognitive and physical skills at once.