At what BAC percentage can even minimally impaired driving begin?

Answer: C — 0.02%

Driving can begin to show signs of impairment at a Blood Alcohol Concentration (BAC) as low as 0.02%. At this level, a person's judgment, attention, and reaction time can be slightly affected, which increases the risk of accidents. Even though it may not be drastically noticeable, the ability to perform tasks such as steering and braking becomes compromised. This is important because many people believe that impairment only occurs at higher BAC levels; however, evidence shows that even low levels of alcohol can affect driving abilities. Understanding this can help individuals make safer choices when it comes to consuming alcohol and operating a vehicle.