What is the maximum permissible blood alcohol concentration (BAC) for drivers under the age of 21 in Ontario?

Answer: A — 0.00%

Drivers under the age of 21 in Ontario are not allowed to have any alcohol in their system while operating a vehicle. This is because they are not legally allowed to consume alcohol until they reach the age of 21, making any blood alcohol concentration (BAC) above 0.00% illegal. Alcohol can impair a person's ability to operate a vehicle safely, and it is particularly dangerous for young and inexperienced drivers to consume any amount of alcohol while behind the wheel. Option B (0.02%) and option C (0.05%) are incorrect as they represent legal BAC limits for drivers above the age of 21 in some provinces, but not in Ontario. Option D (0.08%) is the legal limit for drivers over the age of 21 in Ontario, but it does not apply to those under the age of 21. Therefore, the correct answer is option