Read the excerpt from The Secret Garden. Suddenly a clear rippling little sound broke out near her and she turned around. She was standing a few feet from a young apple-tree, and the robin had flown on to one of its branches and had burst out into a scrap of a song. Ben Weatherstaff laughed outright. "What did he do that for?" asked Mary. "He's made up his mind to make friends with thee," replied Ben. "Dang me if he hasn't took a fancy to thee." "To me?" said Mary, and she moved toward the little tree softly and looked up. Which evidence best supports the idea that Mary is beginning to change? "…she moved toward the little tree softly…" "…she turned around." "'What did he do that for?' asked Mary." "She was standing a few feet from a young apple-tree."

The best evidence of Mary beginning to change is how she suddenly shifts into a soft movement, which indicates she´s become interested in the robin. Given that Mary has been presented as a bratty girl, this change in behavior shows she´s becoming more open to build relationships and be nicer.

The other options don´t have the same effect. The description of Mary standing "a few feet from a young apple-tree," shows she still reluctant to open herself. Her question ("What did he do that for?") indicates a rather alarming surprise.