Apprenticeship Is Best Defined As

Apprenticeship is best defined as:

A) the training that involves working alongside an experienced person, who shows the trainee how to do the various tasks of the job.
B) the training that takes place on equipment set up in a special area off the job site.
C) the training that involves delivering training programs via computer-based training aids in the absence of a live instructor.
D) the off-the-job training method in which specific roles are assigned to the participants.