Hello!
The best text that gives the best support to part A is D, since it extends an example that allows a better undertanding of the citation A and holds it.
In quote D we can see an example of how people who go through particular situations to overcome the diversity of them. Learning resilience involves carrying out a process on the part of the person, this process requires times and effort, and finally makes people to make decisions.
In the example of people in a concentration camp, we can see how to go through these circumstances has led them to adapt to this situation of oppression and carry out actions that would allow them to create possible solutions in the future, for their survival, defense. ,etc.
I hope this helps!
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