________ is an example of an expert system used in healthcare.

• A. Registration
• B. Interface engine
• C. Clinical decision support
• D. Laboratory information system

Answer: (C)

An expert system in healthcare uses encoded knowledge and a reasoning process to support clinical decisions. A clinical decision support system is a prime example because it applies medical guidelines and patient data to generate patient-specific advice, alerts, or recommendations at the point of care. This combination of a knowledge base and inference makes it possible to replicate expert judgment and assist clinicians in choosing safer and more effective actions.

Administrative tasks like registering patients, translating data between systems, or managing lab results are important functions, but they do not provide decision-making guidance based on clinical knowledge.