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The concept of a problem space consists of several components that help in problem-solving processes. These components include goals, states, operators, and subgoals.

Goals refer to the desired outcomes or final results that a problem-solver aims to achieve. They provide direction and purpose within the problem-solving process.

States are the various configurations or situations that can be encountered as one navigates through the problem space. Each state represents a different point along the way to achieving the goal.

Operators are the actions or moves that can be taken to move from one state to another. They define the transitions between states and are crucial for moving towards achieving the goals.

Subgoals are intermediate objectives that help break down the problem into smaller, more manageable parts. They facilitate progress toward the main goal by allowing the solver to focus on achieving smaller targets before addressing the larger problem.

The correct answer indicates that operators play a crucial role in the problem space, as they are necessary actions for navigating through states toward the goal, rather than being an element of the problem space itself.