What is one of the effects of alcohol on the driver's eyes?

Answer: B — The eyes catch very early other drivers' mistakes

The correct understanding of how alcohol affects a driver's eyes is that they tend to stare at a point. Alcohol can impair a driver’s ability to focus and track moving objects. This fixation on a single point can decrease their awareness of their surroundings, making it difficult to notice important details, such as other vehicles or road signs. While some might think that alcohol could enhance certain visual capabilities, such as early detection of mistakes made by other drivers or improved peripheral motion detection, this is not the case. Instead, alcohol primarily hinders a driver's reaction time and the ability to effectively process their environment, leading to impaired judgement and safety on the road. Therefore, the tendency to focus on one point instead of scanning the environment effectively illustrates the impairment caused by alcohol when driving.