Ais a document that an interviewer and restates an applicant's interest in the job.
a. -you letter
b. letter of acceptance
c. rejection letter
d. cover letter

The answer is A: thank-you letter.

A Thank-you letter is a letter sent to the recruiter after a job interview. It is recomended to send it one week after the interview. This is a way to keep someone's options open for the future and leaves a good impression. It is a way to thank the recruiter for the time with them and to reafirm their interest in the organization.