What is the impact of even small amounts of alcohol on driving?

Answer: B — They increase the likelihood of crashing.

Small amounts of alcohol can significantly impair a driver’s judgment and reaction time, even if the individual feels fine and believes they are not affected. Alcohol affects cognitive functions and motor skills, which are critical for safe driving. As a result, consuming any amount of alcohol increases the likelihood of making mistakes or misjudgments while driving, which can ultimately lead to crashes. This effect can be particularly dangerous because drivers may underestimate their level of impairment. Driving under the influence of alcohol, regardless of the quantity, can compromise safety for the driver, passengers, and others on the road.