When do we call the states are safely explored? A. A goal state is unreachable from any state B. A goal state is denied access C. A goal state is reachable from every state D. None of the mentioned

The correct answer is: A goal state is reachable from every state.

A goal state is a state in which the problem is solved. A state is said to be safely explored if it is reachable from a goal state and there is no path from it to a state that is not reachable from a goal state.

Option A is incorrect because a goal

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