Which statement best describes the effects of fatigue?

The statement indicating that fatigue slows reaction time and contributes to errors accurately reflects the well-documented effects of fatigue on human performance. When an individual is fatigued, a variety of cognitive and physical impairments occur. These impairments directly impact reaction times, decision-making abilities, and overall situational awareness.

Fatigue can result from prolonged periods of wakefulness, inadequate sleep, or excessive workload, and these conditions lead to a decrease in both mental acuity and physical coordination. In aviation, where quick and accurate responses are crucial for safety, the risks associated with fatigue become particularly significant. A fatigued pilot may struggle to process information effectively or respond promptly to unexpected situations, substantially increasing the likelihood of errors.

This understanding emphasizes the importance of managing fatigue, prioritizing rest, and adhering to duty time regulations in aviation to ensure optimal performance and safety during flight operations.