The Purpose of a Referee in a Job Application Is

The purpose of a referee in a job application is to

A) persuade a potential employer to give you an interview and to speak about your specific skills relevant to the job on offer.
B) have people who know you, and who are in a responsible position, support your claims about professional competence and experience.
C) have someone speak positively about you, overestimating your good points and those parts of your experience which will particularly contribute to the vacant job.
D) use a trusted third party who will speak to a potential employer on your behalf about what you can do and what you can't do.