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Assertion (A): An agent in a partially observable environment needs internal state.

Reason (R): The current percept alone may not distinguish situations requiring different actions.

Select the correct answer from the options below.

  • A.Both A and R are true, but R is not the correct explanation of A
  • B.A is true but R is false
  • C.A is false but R is true
  • D.Both A and R are true, and R is the correct explanation of A

Answer: D

Both are true and the second is the reason for the first. If two states look identical to the sensors but demand different responses, no function of the current percept can be correct in both, so a memory of earlier percepts is logically necessary. It is an argument from impossibility rather than from efficiency, which makes it much stronger. Establishing that an architecture cannot work, rather than that it works badly, settles the design question immediately.

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