详解
The first paragraph of the passage describes Eppie as "a creature of endless claims and ever-growing desires," one who is "making trial of everything." In this context, her "making trial of everything" can be read as her acting on her curiosity by striving to experience the world around her.
Choices A, C, and D are incorrect because in the context of her "making trial of everything," Eppie can be seen as curious, not friendly (choice A), disobedient (choice C), or judgmental (choice D).