The answer is money order because it is an instrument used by a post office, express company and mostly by banks indicating that the payee may request and receive the amount indicated on the instrument or the money order. The money order is a trusted method of a payment than issuing a check because sometimes we get a bouncing check. A money order is a payment order for the amount of money you borrow in the banks or any express company that uses this instrument. And It is required that the funds should be prepaid for the amount shown in it.