Learning from a mistake after failure is a sign of what?

Correct answer: Improvement mindset

Learning from a mistake shows an improvement mindset because the person examines what went wrong, accepts useful feedback, and changes the approach for the next attempt. Failure then becomes a chance to develop skills rather than a reason to stop trying. Laziness means avoiding effort, fear may prevent action, and carelessness causes mistakes without learning from them, so option D is correct.