The correct answer is C. Parts fabricator in an automobile factory.
Step-by-step explanation
On-the-job training is possible and appropriate for jobs that are not too complex. Also, this is only for jobs that are not related to critical issues as medicine/health or financial services. According to this, a parts fabricator can receive on-the-job training because this is not a very complex job, and a mistake in this position while training does not lead to a critical consequence. So, the correct answer is C. Parts fabricator in an automobile factory.