Nick was referring to the discovery of George's body. Holocaust is defined as a slaughter...... Myrtle, Gatsby, and Tom had each lost their lives for nothing....... they were the sacrifice of those who didn't care for anything or anyone beyond themselves.
Hope this helps!
Answer:
The answer is 'D' because it contain the word 'but'
A coordinating conjunction is a sentence that uses words such as 'but' and 'and'