Concept:A current account allows frequent transactions, and cheque is the authorised instrument for cash withdrawals.Explanation:A cheque is a written order instructing the bank to pay a specified amount from the account holder’s balance.Current account holders often withdraw money by filling a cheque leaf and presenting it at the bank or through clearing.The cheque ensures a secure, traceable, and convenient method of withdrawal.Other methods like transfer and credit cards are also used, but the primary withdrawal instrument for current accounts is the cheque.Answer:D. cheque