What is a common sign of fatigue while driving?

Answer: A — Difficulty focusing or yawning frequently

Difficulty focusing or yawning frequently is a common sign of fatigue while driving. When a driver is fatigued, it can become challenging to maintain attention on the road, leading to lapses in concentration. Yawning is often a physiological response to tiredness, indicating a lack of alertness. Both of these signs suggest that the driver's ability to react to hazards and make safe decisions becomes impaired, significantly increasing the risk of an accident. Recognizing these symptoms is crucial for any driver, as it serves as a warning to take a break or rest before continuing to drive.