From the text, we can conclude that ... A. Anne Sullivan accompanied Helen Keller at school B. Alexander Graham Bell was Anne Sullivan's relative C. Helen Kelle

Jawabannya A. Anne Sullivan accompanied Hellen Keller at school.

Karena di paragraf ketiga, di kalimat terakhir dituliskan "The teacher stayed with her through the years...class discussion for her." Anne Sullivan adalah 'Teacher' dari Hellen Keller, seperti yang diberitahukan di paragraf pertama "From this visit, Hellen met her teacher, Anne Mansfield Sullivan..."