Final answer:
The theme of Helen Keller's 'The Most Important Day' highlights the transformative power of education and empathy, as represented by Anne Sullivan's arrival and her teaching methods which helped Keller overcome her challenges with language and communication. The correct answer is option A.
Step-by-step explanation:
The theme of 'The Most Important Day' by Helen Keller is that the arrival of Anne Sullivan and her subsequent teaching was a significant event that transformed Keller's life, serving as the catalyst for Keller's awakening to language and communication. This is evident as the text describes how the living word 'awakened my soul, gave it light, hope, joy, set it free.'
The narrative portrays the impact of Sullivan's patience, dedication, and loving approach to Keller's education, emphasizing how these qualities can empower an individual to overcome obstacles and unlock new worlds of possibility. The arrival of Anne Sullivan symbolizes the gift of language and the transformative power of education and empathy.