Formulate it as a tree search problem.

What are the start space, goal state, goal predicate, and the path costs?

Answer and explanation:

Start space is a process that is most commonly used in computer and technology science, in which several states are pondered in order to find a goal state, which is a desired result we pretened to achieve during a research. The path is the name we apply to the process from the start space to the goal state. Finally, the path costs are the metrics we use in order to find what's the shortest path to follow.