The 1st one the 3rd one and the 4th one are all correct. Hope this helps! :3
I think that the answer is C, but I am not 100% sure.
Answer: This form of trauma is specific as it affects a large population and is typically more complex than individual trauma. Historical trauma can result in a greater loss of identity and meaning, which in turn may affect generations upon generations until the trauma is ingrained into society.
Explanation:
It's an idiom because (It's) pretty good; (it's) not as unpleasant as one may have originally thought.
