I think a historian has to be curious to be successful. This is simply because if a historian does not have a drive to learn more information\, they will not try. However, if they keep the child-like mindset of always needing to know, they can go far with their discoveries and studies.
The men are filled with joy as the bombs fall around them because they want the Germans to be defeated. Wiesel mentions how they've heard the Germans were losing some battles, but this was the first time they had proof. This shows that they "no longer fear death". They have been living with so much death that it is a regular occurrence. Also, a death that is caused as a result of Germany's defeat is better than a death at the hands of the Germans.
I think it might be A but I don't see the word save in the sentence but if you meant he Gave in D then I would choose D. Hope it helps!
