Final answer:
The correct answer is Receipt (A), as it serves as proof of transaction for both the customer and the business. It is essential for record-keeping and confirms the details of the purchase.
Step-by-step explanation:
The last step for handling a customer's payment is to bring them change, their credit card, and a Receipt. A receipt is an important document that serves as proof of the transaction and includes details such as the items or services purchased, the amounts paid, the date of purchase, and any relevant taxes or discounts. Providing a receipt is an essential part of the payment process in businesses, ensuring that both the customer and the business have a record of the sale.