Final answer:
The minimum number of driving hours required for an applicant under age 18 to apply for a probationary license varies by state.
Step-by-step explanation:
The minimum number of driving hours an applicant under age 18 must complete before applying for a probationary license can vary depending on the state. In some states, there is a required minimum number of supervised driving hours, while others may have a required minimum number of classroom instruction hours. For example, in California, applicants under age 18 must complete at least 50 hours of supervised driving practice, including 10 hours at night, before applying for a probationary license. It's important to check with your state's Department of Motor Vehicles to determine the specific requirements.