What is the procedure for processing a credit card transaction?

The procedure for processing a credit card transaction involves a systematic approach to ensure accuracy and security. The correct answer outlines an important sequence: first, the card is either swiped or inserted into the terminal. This initial step is crucial as it allows the payment system to read the card information for transaction processing.

Next, confirming the amount to be charged is necessary for transparency and customer satisfaction, ensuring the customer is aware of the total cost before completing the transaction. Finally, asking for a signature serves as an additional layer of verification, helping to authenticate the cardholder's identity and providing a record of the customer's approval for the charge. By following this procedure, cashiers can effectively minimize errors and potential fraud, enhancing both the customer experience and the integrity of the transaction process.

The other options present methods that either skip critical steps or introduce unnecessary complications, which could lead to confusion or issues during payment processing.