Which of the following occurs during the performance step in job instruction training?

A) show that safety is especially important
B) show why the job is important
C) allow the trainee to complete all the steps
D) break the job into tasks

During the performance step in job instruction training, the trainee is allowed to complete all the steps of the job under the trainer's supervision. This provides the trainee with hands-on experience and helps them gain confidence in their abilities. The other options mentioned, such as emphasizing safety or breaking the job into tasks, may be important components of the training but are not specifically related to the performance step.