I think the answer is b but please let me know if it was right
A.
neither side realized how deeply the other felt about the issues of slavery and states' rights
In June 1914 a Serbian-nationalist terrorist group called the Black Hand sent groups to assassinate the Archduke
Answer: Personification
Explanation:
Personification is when the attributes which belong to human beings are being used on abstract things, inanimate objects or probably animals.
In this scenario, the sentence is "The long, sheer curtains twirled in the breeze" and we can see that " twirl" that is used here is an attribute related to human beings.