Which system is categorized under knowledge management and utilizes advanced software technologies?

The correct choice, which is Expert System, is a type of knowledge management system that leverages advanced software technologies to simulate the decision-making ability of a human expert in a specific field. These systems are designed to solve complex problems by reasoning through bodies of knowledge, represented mainly as if-then rules.

Expert Systems analyze vast amounts of data and apply inference rules to provide users with recommendations or decisions that would typically require human expertise. They are particularly useful in areas where specialist knowledge is scarce or where quick decision-making is vital, such as in medical diagnosis, engineering design, or financial forecasting.

In contrast, the other systems listed do not primarily focus on knowledge management or the high-level application of expert reasoning. Office Automation Systems are designed to improve productivity through tools like word processors and spreadsheets, and Transaction Processing Systems handle routine transactions like sales and order processing. Additionally, Database Management Systems are primarily concerned with storing and organizing data rather than applying reasoning and expertise to that data. Thus, the unique aspect of an Expert System is its capability to manage and utilize knowledge effectively through advanced technology, distinguishing it from the other options.