A bank can close the account of the customer

(a) if the account is not being conducted as per terms of the accounts (b) if the customer is keeping balance continuously below the minimum balance (c) and before closure of the account, a notice is sent to the customer (d) the customer is not complying with the KYC guidelines

According to RBI, "Banks should not take undue advantage of customer difficulty or inattention. Instead of levying penal charges for non-maintenance of minimum balance in ordinary savings bank accounts, banks should limit services available on such accounts to those available to basic savings bank deposit accounts and restore the services when the balances improve to the minimum required level". Thus, (b) is not true and won't result in closing of the account. Other than (b), all the parts are true.