Answer:
I think it is D.) Scientist have spent years trying to determine how tsunamis can be predicted with greater accuracy.
Explanation:
Words like ain't, you guys, or y'all would not be worlds you would want to put in a formal style or tone.
So, words such as determine, predicted, and greater accuracy, are formal in a way. Just think of it this way, the sentence would sound as if someone who was smart was speaking or someone who is very FORMAL.
I hope this helped you ; )
If I remember correctly, the resolution to the conflict in "Homesick" is D) Jean finds a way to feel as though she fits in, in China, without sacrificing her American identity.
I dont understand what you are asking for in the question, considering there is no paragraph or specific details