Thinking becomes more abstract, complex, and systematic in adolescence. Which stage is this?

• A. Concrete operational stage
• B. Formal operation stage
• C. Scaffolding
• D. Reversibility

Answer: (B)

In adolescence, thinking shifts to formal operational thinking, where the mind can handle abstract concepts, hypothetical scenarios, and systematic problem solving. This stage lets you reason about possibilities, plan steps to test ideas in your head, and consider how changing one variable affects outcomes, not just what you can observe directly. By contrast, the concrete operational stage involves logical thinking about concrete objects and events you can see, scaffolding is a teaching strategy that provides supported practice, and reversibility is a skill from earlier concrete thinking where you can mentally undo a sequence of actions.