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What does a model based reflex agent maintain?

  • A.A record of every percept it has ever received since starting
  • B.A probability distribution over all possible future actions
  • C.Internal state representing the part of the world it cannot see
  • D.A list of goals to be achieved in a specified order

Answer: C

The agent keeps an internal state updated by a model of how the world evolves and how its own actions affect it, which lets it act sensibly when the percept alone is insufficient. Goals belong to the next architecture up, storing every percept is neither necessary nor practical, and action distributions belong to policies. Adding just enough memory to overcome partial observability, rather than storing everything, is the design idea.

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