What is the difference between reactive machines and limited-memory AI?

Reactive machines: These are the simplest form of AI systems. They operate only on current inputs and do not store past data (e.g., IBM’s Deep Blue chess computer).

Limited-memory AI: These systems can use past data to make better decisions and predictions — commonly seen in machine learning models like those used in autonomous vehicles.

Therefore, Option C correctly highlights that reactive machines lack memory and operate only on real-time inputs, whereas limited-memory AI can utilize recent past information for learning.