A 20-year-old California driver records a blood-alcohol concentration of 0.01 percent on a qualifying chemical test. What rule applies?
The under-21 prohibition applies at this reading✓Correct answer
The drive is permitted because the reading is below 0.04 percent
The drive is permitted if it is shorter than ten miles
Only the ordinary-adult 0.08 threshold can apply
Explanation
The under-21 rule reaches a measured concentration of 0.01 percent or greater, so this reading meets its threshold. The ordinary-adult 0.08 figure does not grant a 20-year-old permission to drive at a lower measured concentration.