Following a Serious Marine Incident, a mariner involved in the incident is prohibited from consuming alcohol until after being tested or __________.

Correct Answer: Option C — 8 hours following the incident

Per 46 CFR 4.06-5, a mariner involved in a Serious Marine Incident is prohibited from consuming alcohol for eight hours following the incident, or until they have been tested for alcohol. This ensures the integrity of post-incident chemical testing required to determine if impairment contributed to the casualty.