How long is the impoundment period for driving an unregistered vehicle on the 2nd or subsequent offence?

Answer: A — 7 days

The impoundment period for driving an unregistered vehicle on the 2nd or subsequent offence is 7 days. The other options are incorrect because -B: 3 days is too short of a period to effectively deter and punish repeat offenses of driving an unregistered vehicle. -C: 30 days may seem like a reasonable choice, but it is not as effective as A in deterring repeat offenses because it is not as lengthy of a period of time. -D: 15 days is also not as effective as A in deterring repeat offenses because it is still shorter than the correct answer of 7 days.