Answer:
Answer is 6 hours.
Step-by-step explanation:
This is because it is believed that the presence of alcohol can still be detected within this period, that is , the traces of the alcohol will still be in the blood, it wouldn't have wear off. This means that, it would be assumed that the accident occurred under the influence of the alcohol.
A device known as breathalyzer is used in estimating alcohol from a breath sample.