Which of the following is an application developed using AI methods focused on a specific area of knowledge?

An expert system is a type of application that utilizes artificial intelligence to emulate the decision-making ability of a human expert in a specific domain. These systems are designed to solve complex problems by reasoning through bodies of knowledge, represented mainly as if-then rules. Expert systems are built to analyze information and provide solutions or recommendations based on that information, making them valuable in fields such as medical diagnosis, troubleshooting, and financial forecasting.

The focus of an expert system on a particular area of knowledge distinguishes it from other types of systems. For example, while a decision support system may provide assistance in decision-making across various contexts, it does not necessarily focus on a specific area of expertise. Similarly, knowledge management systems are used to organize and share knowledge rather than emulate expert-level reasoning, and database management systems focus primarily on storing and retrieving data without making decisions. Therefore, the characteristics of an expert system align perfectly with the description of an application developed using AI methods for a specific area of knowledge.