Concept:Special deposits are reserves that the central bank compels commercial banks to keep with it, limiting their ability to create credit.Explanation:When the central bank calls for special deposits, commercial banks must transfer a portion of their funds to the central bank.This action directly reduces the cash reserves available with commercial banks.With smaller reserves, banks cannot extend as many loans to the public.Hence, the central bank uses special deposits to tighten credit and reduce overall bank lending.Answer:A. reduce bank lending