The turning point in the story is when the protagonist, a young girl, thinks of meeting Danny Casey - a famous football player. This event marks a significant shift in the narrative and sets the story on a different trajectory.

Reasons for choosing option 'D':
1. Introduction of a new goal: Up until this point in the story, the protagonist's main focus has been on her strained relationship with her brother and her father's anger. However, when she starts thinking about meeting Danny Casey, her attention shifts towards a new goal - meeting her idol and potentially finding inspiration or guidance from him.

2. Shift in perspective: The protagonist's thoughts about meeting Danny Casey indicate a change in her mindset. Instead of dwelling on the negative aspects of her life, such as the fights with her brother or her father's anger, she now starts to see the possibility of something positive happening. This shift in perspective is crucial in the development of the story and the protagonist's character arc.

3. Catalyst for growth and change: The idea of meeting Danny Casey not only introduces a new goal for the protagonist but also presents an opportunity for personal growth and change. It represents a chance for her to pursue her dreams and passions, and potentially find a way to overcome the challenges she is facing. This turning point sets the stage for the protagonist's journey towards self-discovery and transformation.

4. Plot development: The introduction of the desire to meet Danny Casey adds a new layer of complexity to the story. It creates anticipation and raises questions about how the protagonist will go about achieving her goal. This turning point propels the narrative forward and drives the subsequent events in the story.

In conclusion, the turning point in the story occurs when the protagonist starts thinking about meeting Danny Casey. This event introduces a new goal, shifts the protagonist's perspective, serves as a catalyst for growth and change, and advances the plot.