Answer:
I agree with ayama19.
D. “However, Clara was not content to sit on the sidelines; she often risked her own life to care for soldiers wounded in battle."
Explanation:
it seems to be the most logical and describes Clara the most.
I know that A and C are not part of this, since this is about Clara and not the red cross or just the war. and B is just a fact about her. It doesn't really describe Clara that much.
D describes Clara the most. It shows she is courageous, brave, and is willing to help anyone in need of assistance.
(anyone else getting Clara Afton vibes here?)