Read the article and select the best answer. Article: Sang Lan is a former member of the national women's gymnastic team. She hurt herself seriously in a competition at the Goodwill Games held in Long Island, New York in 1998. She has been on a wheelchair since then. Although she was disabled, Sang Lan believed that she would walk again one day. She kept on exercising all year round, and was sure that she would stand up. When she was in New York, she caught the hearts of Americans. Many people called her "a brave and confident girl". She became an international symbol of courage and was very popular in the United States. The brave girl has been a college student in Peking University now. Her dream of going to college has come true. "'Get up from where you fall' is the most ordinary thing for a gymnast. And it's my motto ." Sang said, "I'll spend my time scientifically and work hard on my studies so as to be a winner in life." ,. Question: Sang Lan became an international symbol of courage because she _ . Options: A: was always smiling B: was hurt badly C: was an athlete D: faces the challenges bravely
D