Final answer:
A BAC of 0.40% or higher can lead to coma or death. The threat increases with higher BAC levels, and it's crucial to understand alcohol metabolism and intoxication symptoms to avoid severe risks.
Step-by-step explanation:
A blood alcohol concentration (BAC) of 0.40% or higher can lead to coma or death. Alcohol intoxication affects individuals differently and can lead to various stages of impairment. While a BAC of 0.08% is considered legally intoxicated, higher levels such as 0.20% cause acute intoxication, around 0.30% can lead to unconsciousness, and approximately 0.40% to 0.50% or higher is the range where the risk of coma or death is significantly increased. Therefore, it is important to consume alcohol responsibly and be aware of the severe risks posed by high levels of alcohol in the bloodstream. Understanding the rate of alcohol metabolism and the symptoms of alcohol intoxication can be critical in preventing alcohol-related harm.