Q. The Set of actions for a problem in a state space is formulated by a
✅ Correct Answer: (C)
successor function, which takes current action and returns next immediate state
Explanation: the most common formulation for actions uses a successor function. given a particular state x, successor-fn(x) returns a set of (action, successor) ordered pairs, where each action is one of the legal actions in state x and each successor is a state that can be reached from x by applying the action.