Final answer:
In North Carolina, the legal limit for driving under the influence is a BAC of 0.08%.
Step-by-step explanation:
In North Carolina, a Blood Alcohol Concentration (BAC) of 0.08% is considered legally impaired for drivers. This threshold is in line with the legal limit for intoxication in most US States, and driving with a BAC at or above this level can lead to DUI (Driving Under the Influence) charges. It is important to note that the body metabolizes alcohol at a consistent rate, and actions like drinking coffee or taking a cold shower will not speed up the process to sobriety.