Final answer:
The true statement about transaction-processing systems is that they can automate repetitive operations, improving efficiency and accuracy in business processes.
Step-by-step explanation:
The statement that is True of transaction-processing systems is:
b. They can automate repetitive operations.
Transaction-processing systems are designed to handle a large volume of routine, repetitive transactions. They are used in businesses to manage tasks such as payroll, inventory control, and billing. By automating these types of tasks, transaction-processing systems can improve efficiency, reduce errors, and decrease the time taken to complete business processes. Moreover, these systems are designed to streamline operations and minimize the need for human involvement, which is contrary to the other statements provided. For example, it's incorrect that transaction-processing systems focus on data encapsulation (a concept more closely related to object-oriented programming), pass on additional costs to organizations (they typically reduce costs by increasing efficiency), or require maximum human involvement (they aim to minimize it).