What BAC defines legal intoxication limit?

• A. >0.1%
• B. >0.08%
• C. >0.05%
• D. >0.2%

Answer: (A)

The key idea is that a legal intoxication limit is a fixed BAC value set by law that determines when driving is illegal due to alcohol impairment. In many places the widely cited threshold is around 0.08% BAC (0.08 g/dL), meaning once BAC exceeds that level, driving is considered illegal. Some jurisdictions or older standards use 0.10% as the legal limit, which is the level reflected here. This recognizes that by about one-tenth of a percent, noticeable impairment is likely, even though noticeable effects can begin at lower BAC values. The other options represent either lower limits (which are not generally the standard legal cutoff for most driving laws) or higher values than typical limits. So selecting the 0.10% level aligns with jurisdictions that treat anything above roughly one-tenth of a percent as legally intoxicated.