Which of the following is an essential detail to include on both your resume and cover letter?

Including your name, address, phone number, and email address on both your resume and cover letter is essential because these details are crucial for potential employers to identify and contact you. Your name establishes your identity, while your contact information ensures that hiring managers can reach out for interviews or follow-up questions. Clear presentation of this information also demonstrates professionalism and attention to detail, which are attractive qualities in a candidate.

While the other options may be relevant in specific contexts, they do not hold the same necessity across all applications. Personal hobbies and interests might enhance a cover letter but are generally not critical for a resume. Educational history is important, but only presenting this information without including essential contact details would leave the employer with no way to contact you. Lastly, salary expectations are usually addressed later in the hiring process or during negotiations and typically do not belong on a resume or initial cover letter.