At a BAC of .09%, a person is considered?

Answer: B — Over the legal limit

A blood alcohol concentration (BAC) of .09% indicates that the individual exceeds the legal limit for operating a motor vehicle in Oregon, which is set at .08%. This threshold is critical for understanding impairment and the associated legal ramifications. When a person's BAC is at or above this limit, they are deemed impaired in their ability to operate a vehicle safely. This impairment can affect judgment, coordination, and reaction times, increasing the risk of accidents and injuries. The legal definition is put in place to help maintain public safety by regulating alcohol consumption related to driving. Understanding this limit is essential for anyone serving alcohol, as it also illustrates the responsibility that establishments and servers have in monitoring patrons' alcohol consumption. Recognizing when a person is over this limit helps servers make informed decisions about service and encourages responsible alcohol consumption.