Final answer:
The effectiveness of a driver testing and licensing program is contingent on the qualifications of the instructors and evaluators who instruct and assess driver's knowledge and skills.
Step-by-step explanation:
The effectiveness of the motor vehicle driver testing and licensing program largely depends on the qualifications of the instructors and evaluators. These professionals are responsible for ensuring that candidates have the necessary knowledge and skills to operate a vehicle safely. To achieve this, they must have an in-depth understanding of traffic laws, safe driving practices, and the ability to assess a driver's aptitude effectively.