Which document typically accompanies a job application to introduce the applicant?

A cover letter is specifically designed to accompany a job application, serving as an introduction to the applicant. It allows the candidate to convey their interest in the position, highlight key qualifications, and explain how their skills can benefit the employer. This document is crucial for providing context to the resume, offering a personal touch that outlines the applicant's motivation and personality, making a strong first impression.

In contrast, a resume is a formal record of work experience and education but does not provide the narrative or personal engagement that a cover letter does. A networking email is typically used to connect with professionals in the field or seek informational interviews rather than to apply for a specific job. A thank-you note, though important after an interview or meeting, is not intended to introduce the applicant in the context of a job application. Thus, the cover letter is the appropriate document for this role.