Final answer:
A business should use a sales receipt to record a transaction where a customer pays when they place an order, with the sales receipt providing necessary transaction details.
Step-by-step explanation:
When a customer pays at the time they place an order, the business should record this transaction using a sales receipt. This is the appropriate document because it indicates that payment has been received and the goods or services are sold. A sales receipt typically includes details of the transaction, such as the date, a description of the items purchased, the amount paid, and the payment method. Since a debit card operates like a check, it instructs the bank to transfer money directly and immediately from the customer's bank account to the seller, confirming the completion of the transaction at the point of sale.