Final answer:
The correct way to handle a credit card transaction is to swipe the card for payment. Options b), c), and d) are incorrect as they either compromise security or are unrelated to the processing of the transaction.
Step-by-step explanation:
The correct option in handling a credit transaction is a) Swipe the credit card for the transaction and proceed. This is because credit cards have a magnetic stripe containing sensitive data, and swiping the card allows for the secure electronic transfer of funds based on the principle of electromagnetic induction. Handling credit card transactions properly is a critical step in protecting against identity theft, which can involve the unlawful acquisition and use of personal and financial information. As such, you should not ask for the customer's personal identification number (PIN) in the case of credit cards—this would be incorrect, making option b) incorrect. Similarly, option c) is not related to the processing of a credit card transaction and doesn't ensure the proper handling of the card. Lastly, option d) does not involve any verification or security measure, which is not a professional practice in handling such transactions.