Serena prepared for her first tournament by watching a video of Steffi Graf winning the US Open, demonstrating her early dedication to the sport and her eagerness to draw inspiration from established champions.
The correct answer is option A. "She watched a video of Steffi Graf winning the US Open."
Before competing in her first tournament at the age of eight, Serena watched a video of Steffi Graf winning the US Open. This choice implies that Serena sought inspiration and motivation from the achievements of a tennis legend, Graf. By observing Graf's success, Serena likely aimed to gain insights into the game and absorb the winning mindset of a renowned player. This proactive approach showcases Serena's early commitment to her tennis journey and her willingness to learn from accomplished athletes in order to enhance her own skills and performance.