Final answer:
The correct answer is C) A transaction processing system, which is designed to record, process, and update transactions such as ticket sales for events in a database in real-time.
Step-by-step explanation:
The transaction processing system is the correct answer to the question of which system accesses and updates a database to keep track of the sales of tickets to an upcoming event. A transaction processing system (TPS) is designed to handle a large volume of routine, recurring transactions.
They are widely used in businesses to collect, store, modify, and retrieve the transactions of an organization. In the context of ticket sales, a TPS would record each ticket sale as a transaction, updating the event's database in real-time to reflect the latest sales figures and inventory count.
System software, networking software, an operating system, and a knowledge management system do not directly deal with processing sales transactions.
System software helps the computer's hardware and applications to function, while an operating system is the software that, among other roles, manages hardware and software resources. Networking software enables computers to communicate over a network, and a knowledge management system aids organizations in capturing, organizing, and sharing knowledge.