What is the legal blood alcohol concentration (BAC) limit for drivers aged 21 and over in North Carolina?

Answer: B — 0.08%

The legal blood alcohol concentration (BAC) limit for drivers aged 21 and over in North Carolina is 0.08%. This limit is established to ensure that drivers maintain adequate cognitive and motor skills necessary for safe driving. A BAC of 0.08% indicates that an individual has a sufficient level of alcohol in their system that can impair their ability to operate a vehicle safely, increasing the risk of accidents. This standard aligns with the national guideline for impaired driving, which most states have adopted to promote road safety. Understanding and adhering to this BAC limit is crucial for all drivers to prevent legal consequences and ensure the safety of themselves and others on the road.