Which of the following best describes the usual limit for trainees on a job site?

• A. 1
• B. 2
• C. 3
• D. 4

Answer: (C)

Keeping the number of trainees small enough for direct supervision is essential for safety and effective learning on a job site. With three trainees, the instructor can watch each person closely, demonstrate proper procedures, and provide immediate feedback to correct mistakes before they become risky. This mix of hands-on practice and real-time guidance helps reinforce safety practices and ensures hazards are noticed and addressed right away. If there are more than three, supervision becomes stretched, making it harder to monitor everyone and respond quickly to safety concerns. Fewer than three can slow training, but the key idea is that three strikes a balance between practical practice and strong supervision, which is why three is the usual limit.