Concept:The fee charged by the post office for handling a postal order is called poundage.
Explanation:A postal order is a prepaid money transfer service offered by the post office.
The post office charges a small commission for issuing the postal order.
This commission is known as poundage.
Premium is a term used for insurance payments.
Interest refers to the cost of borrowing money.
Brokerage is a fee paid to a broker for arranging a transaction.
None of these terms applies to a postal order fee.
Hence, the correct answer is poundage.
Answer:B. poundage