Which of the following statements about road tests for potential driver/ operator is MOST accurate?
a. Road tests are used to evaluate a candidate's ability to safely operate a vehicle in various driving conditions.

b. Road tests typically include evaluations of a candidate's knowledge of traffic laws and regulations.

c. Road tests are often conducted by certified driving instructors or licensing authorities.

d. Road tests are not necessary for determining a candidate's readiness to become a licensed driver/operator.