Final answer:
Vola responds with understanding and empathy when Peter tells her he can feel what Pax feels, and she opens up about her own feelings. The correct answer is option C. She opens up about her own feelings.
Step-by-step explanation:
The response Vola gives when Peter tells her that he can feel what Pax feels isn't directly provided in the extracts you've given. So, to answer this question accurately, one must refer to the novel Pax by Sara Pennypacker.
In the story, when Peter reveals to Vola that he has a special connection with his fox, Pax, and that he can sense Pax's feelings, Vola's reaction is one of understanding and empathy. She doesn't run away or laugh at him; rather, she opens up about her own feelings. This emotional exchange deepens their connection and allows both characters to share more about their personal lives and the traumas they have experienced.