Final answer:
A realistic job preview is what is given to show job-seekers what their daily tasks would be like if hired, different from structured or unstructured interviews, situational judgement tests, and background checks. The correct answer is option a.
Step-by-step explanation:
The item given to job-seekers to demonstrate what they would be doing on the job if they were hired is known as a realistic job preview. A realistic job preview provides candidates with a clear and accurate picture of what the day-to-day reality of a job entails, which can help them decide if the position matches their preferences and skills. This contrasts with structured interviews, where identical questions are posed to each candidate and answers are scored using a standardized system, and unstructured interviews, which lack a standardized question set and scoring method. Other methods such as situational judgement tests assess candidates' judgment in work-related scenarios, while background checks are employed to verify candidates' history and credentials.