Which of the following is a restriction on a driver regarding open containers?

The correct choice highlights a significant aspect of laws regarding open containers in vehicles. According to most Alcohol Beverage Control laws, it is illegal for a driver to have an open container of alcohol in their immediate area while they are driving. This restriction is in place to minimize the potential of alcohol consumption while operating a vehicle, thereby promoting safety on the roads. Drivers are subject to penalties if they are found to have open containers within reach or accessible space, even if they haven’t consumed alcohol.

The other options misrepresent current legal standards. For instance, the first choice misleadingly implies that drinking alcohol with a blood alcohol content beneath a certain level is acceptable, which doesn't align with the legal prohibitions pertaining to open containers. The fourth choice suggests a limitation on the number of open containers allowed, which varies by jurisdiction but generally is more stringent. Lastly, the suggestion of storing open containers under the seat is contrary to most open container laws, which typically require that open containers not be accessible to the driver or passengers.