Which of the following is a feature of the Card Authorization System?

The Card Authorization System plays a critical role in the processing of card transactions, particularly in the context of verifying and approving cardholder credit for purchases. One of its primary features is fraud prevention for service establishments. This system evaluates transaction requests in real-time, using various risk assessment techniques to identify and mitigate potential fraud before it can impact the merchant or customer. By leveraging data from multiple sources, the authorization system can flag suspicious transactions, helping to protect both the business and consumers from unauthorized use of cards.

The other options listed do not accurately reflect the functionalities of a Card Authorization System. For example, automatic reward updates and direct management of cardholder credit scores are features more closely associated with loyalty programs or credit reporting services, rather than the authorization process itself. Likewise, while handling customer inquiries about charges is important for customer service, it falls outside the realm of card authorization and relates more to post-transaction support rather than the verification and approval of the transaction process.