Final answer:
A person with a BAC of 0.50% is at risk of dying without immediate medical attention due to severe alcohol intoxication and related complications.
Step-by-step explanation:
A person with a BAC (blood alcohol concentration) of 0.50% is very likely to die without immediate medical attention. At this level, the body is overwhelmed by alcohol, leading to severe intoxication and potentially life-threatening complications.
High BAC levels can cause respiratory depression, leading to a lack of oxygen in the body. This can result in unconsciousness, coma, and eventually death. Additionally, alcohol poisoning can cause a shutdown of vital organs such as the heart and lungs.
Therefore, it is crucial to seek medical help if someone has a BAC of 0.50% or higher to prevent serious harm or even fatality.