She is supporting an inference from the text. An inference is something that is implied, and the person saying they've "witnessed much fighting" infers that they're old, whereas "I am wounded with iron" can be taken to mean he's been wounded by a weapon like a sword.
The sentence I would choose is: "He was looking down at his outstretched hands as he talked". To me, it implies that he cannot look into the eyes of the person he is speaking to, as if he doesn't feel he is worthy.
Answer:
I would say B
Explanation:
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B possibly. That is the answer that makes the most sense