Final answer:
The crediting process used by cable operators when a customer changes services in the middle of a billing cycle is Prorating. This ensures charges are only applied for the period the service was used. Bundling is a different strategy that deals with selling services as a package. Hence, option (A) is correct.
Step-by-step explanation:
The process used by cable operators to adjust a customer's account when they change their services in the middle of a billing cycle is known as Prorating. This method involves calculating the charge for the new service for the remainder of the billing cycle based on the number of days the service will be used. Prorating ensures customers only pay for the portion of the service they have used when they make changes to their account partway through a billing period.
In contrast, bundling refers to the practice of selling multiple services together, often at a discounted rate, such as offering cable, internet, and phone services as a single package. While this is a related concept, it is not the method used to adjust billing when services are changed mid-cycle. Discounting may also occur within the realm of promotions or special offers but is not the correct term for the mid-cycle billing adjustment specifically.