Answer:
D. Cover letter
Step-by-step explanation:
A cover letter is sent together with a resume by a job applicant to a potential employer. The cover letter details the job the applicant is applying for.
While a resume shows the technical and work experiences of the applicant, the cover letter shows their personal side. The cover letter allows a candidate to demonstrate why they are the best for the position. A cover letter gives each candidate an opportunity to market themselves to the employer.