I would say isolation because Elie and his father are separated from his mother and 2 sisters so that he and his father go to the forced labour camp and his mother and sisters go to the gas chambers though the mother and one sister survive he does not see them again, at least not there. And seeing his father become helpless so that he must become his father's caregiver makes him resentful and then ashamed of his resentment.
The main idea is the first sentence 1) Storage facilities have become part of our culture.
Answer: A. (Replace + -ing) (Replacing)
Hope this helps, have a great day/night!
~IFoundJiminsLostJams~
Explanation:
A parallel structure means that the same form of the word is used in each part of the sentence. So the correct answer is 'I look forward to visiting Phoenix and to meet Rachel'. For this sentence to be correct, it would need to say 'I look forward to visiting Phoenix and meeting Rachel'.