Mistakes made by users that can contribute to major accidents are referred to as which?

• A. Fatigue
• B. Human factors
• C. Interval data
• D. Human error

Answer: (D)

Mistakes made by people that can lead to major accidents are described as human error. This term refers to actions or judgments by individuals that fail to meet safety requirements, such as incorrect operations, misinterpretations, or skipped steps, which can create unsafe conditions. Fatigue is a condition that can increase the likelihood of such mistakes but isn’t the mistakes themselves. Interval data is irrelevant to this concept, as it’s a type of data in statistics. Human factors is the broader field that studies why errors happen and how design, training, and environment influence performance, but it’s not the label for the mistakes themselves. The best fit for describing those user mistakes that contribute to major accidents is human error.