Which of the following is NOT an 'On the Job Method' of training?

Vestibule Training

The correct answer is Option (4) → Vestibule Training

Vestibule Training is an Off-the-Job method of training. In this method, a simulated work environment is created, which is separate from the actual work floor, to train employees on equipment and procedures that are identical to those used on the job. This is done to prevent disruption to actual work and to avoid any damage to expensive equipment or danger to the trainee.