Final answer:
The author provided information to show individuals how to convert pessimistic thoughts into positive, constructive reflections, thereby promoting a growth mindset and reflective thinking. The correct answer is option D.
Step-by-step explanation:
The author included the information in the passage to illustrate how people can reframe pessimistic thoughts to be more constructive. The passage suggests that when faced with cognitive biases or negative self-talk, individuals can practice metacognition—thinking about one's own thinking—to shift their mindset and approach challenges with a sense of opportunity and positivity. This reframing is seen as an application of a growth mindset, a concept often discussed in the field of philosophy that enables individuals to become more reflective thinkers and potentially more successful learners and philosophers.