The correct answer is C. Write an e-mail message to your former supervisor to tell him or her about the position and company and to review what you would like him or her to stress to the prospective employer.
Explanation:
A reference is a person such as a former employer, supervisor or co-worker that can inform an employer about your skills, experience, qualities, etc. In the process of applying for a job, references are contacted after the interview and the information provided by your reference is analyzed by the employer to make important decisions.
Due to this, it is recommended you contact your references (supervisor, previous employers, etc.) through e-mail or similar to let them know they might be contacted, also, it is a good idea you tell them about the company and position you are applying because in this way they can focus on the aspects you want. Thus, the step after the job interview in terms or references is "Write an e-mail message to your former supervisor to tell him or her about the position and company and to review what you would like him or her to stress to the prospective employer".
