Final answer:
After completing GDL requirements and supervised driving, a probationary license holder can apply for a basic driver's license, which allows unsupervised driving privileges.
Step-by-step explanation:
After completing the Graduated Driver Licensing (GDL) requirements and one year of supervised driving, the holder of a probationary license can then apply for a basic driver's license. The GDL program is designed to provide new drivers with the opportunity to practice their driving skills under less risky conditions before obtaining a full-privilege license. The goal of the GDL system is to reduce the high accident rates that new drivers, particularly teenagers, tend to have. Once the holder of a probationary license has met the necessary requirements, they can take the next step to obtain their basic license, which grants them full driving privileges without the need for a supervising driver.