Final answer:
The required practice period for driving before obtaining a license varies by region. Teens must often fulfill a mandated supervised driving period. The specifics can be found in regional driving laws.
Step-by-step explanation:
The amount of time you must practice driving before obtaining your license can vary depending on your country or state's regulations. Generally, there often are specific requirements for adolescent drivers, which may include a mandated period of supervised driving practice before a driver's license can be issued.
This period could be anywhere from a few months to a year. However, your question seems to be part of a larger investigation into whether teenagers obtain their driver's licenses at the same average age across different regions. To answer your initial question, you would need to look into the specific laws of the region in question.