essential (adj): A. Something that is not very important or required. B. Something that is absolutely necessary or very important. C. Something that is optional and can be easily replaced.

candidate (n): A. A person who is trying to be elected or is applying for a job. B. A person who manages a company or organization. C. A person who provides recommendations for job applicants.

the person who asks the questions in an interview

(university) degree (n):A. A unit of measurement for temperature or angles. B. A level of knowledge or expertise in a field of study. C. A style of clothing worn at formal events.

vacancy (n): A. A position or space that is unoccupied or available. B. A busy schedule full of appointments. C. A document required for employment.

the person who answers the questions in an interview

qualification (n): A. A skill or type of experience needed for a particular job or activity. B. A certificate given to an employee after years of service. C. A specific job title or position in a company.

useful (adj)A. Something that is of little importance or value. B. Something that is helpful and practical for achieving a purpose. C. Something that is difficult to understand or use.

a formal meeting between an employer (or recruiter) and a candidate for a job, during which the employer evaluates the candidate's qualifications, skills, experience, and suitability for the position.