The "illegal per se" law pertains to operating a vehicle while having what type of blood alcohol content?

The concept of "illegal per se" refers to situations where a specific level of blood alcohol concentration (BAC) is deemed unlawful to operate a vehicle, regardless of whether the driver appears impaired. In many jurisdictions, this is typically set at a blood alcohol content of 0.08% or higher for non-commercial drivers. This legal standard is established by statutes and does not require proof of actual impairment; simply being at or above this BAC level is sufficient for a DUI (driving under the influence) charge.

Thus, the term "statutorily prohibited" accurately describes the nature of the illegal per se law. It indicates that the law explicitly forbids operating a vehicle with a certain BAC level, effectively making it illegal by law.

The other options do not reflect this legal standard concerning BAC. For example, "legally permissible" suggests that the BAC is allowed, which contradicts the illegal per se concept. "Medically allowable" and "commercially acceptable" also miss the mark, as they imply different contexts that do not pertain to driving regulations or blood alcohol levels.