Answer:
the answer is option 5) the most expensive method of discovery.
Explanation:
A deposition is a discovery process that involves the taking of sworn, out-of-court oral testimony of a witness. It could be transcribed into written form for use in court. It is mostly conducted outside the court premises without a judge present to supervise.
It is an expensive discovery method because it takes weeks or months to plan. The budget include travel, video expenses, cost for transcriptions, courier fees for subpoena delivery and loss of work time for the deponent.