The correct answer is: B. Planning problem
A planning problem is a problem in which an agent must find a sequence of actions to achieve a goal from an initial state. Planning graphs are a technique for solving planning problems. They are a type of state space search algorithm that uses a graph to represent the possible states of the world and the actions that can be taken in each state.
Propositional planning problems are a type of planning problem in which the state of the world is represented by a set of propositional variables. The actions that can be taken are also represented by propositional variables. The goal of a propositional planning problem is to find a sequence of actions that will make all of the goal propositional variables true.
Action problems are a type of planning problem in which the state of the world is represented by a set of objects and their properties. The actions that can be taken
are also represented by objects and their properties. The goal of an action problem is to find a sequence of actions that will change the state of the world in a desired way.None of the mentioned is not a correct answer.