Final answer:
If you refuse a chemical test for drivers under age 21, second time, the punishment may include driver's license suspension and other penalties.
Step-by-step explanation:
If you refuse a chemical test for drivers under age 21 for a second time, the punishment may vary depending on the laws of the specific jurisdiction.
However, consequences typically include the suspension of your driver's license and other penalties. For example, in some states in the United States, a second refusal may result in an automatic driver's license suspension for a longer period of time, such as one to two years.
It's important to note that laws regarding chemical tests for drivers under age 21 can vary, so it's advisable to consult the specific laws in your area or seek legal advice if you find yourself facing this situation.