What is one of the three important tasks to complete before every interview?

Confirming your appointment is crucial before an interview because it ensures that both parties are aligned on the scheduled time and date. This task eliminates potential misunderstandings or scheduling conflicts and demonstrates professionalism and respect for the other person's time. By confirming your appointment, you reinforce your commitment to the meeting and allow the other party to prepare accordingly.

While gathering documentation, conducting background checks, and reviewing past interviews are important in various contexts, they do not hold the same immediate relevance as confirming an appointment. Ensuring that the interview is set can prevent a lot of logistical issues that could arise otherwise.