A rock cycle is a group of changes
I think it's explanation since the text shows comparison which isn't direct, ni similar words are present, ruling out synonyms and examples aren't present in the text.
If these were the missing choices:
<span>A) Farquhar may unknowingly walk into a trap.
B) Farquhar will pursue the soldier from the North.
C) Farquhar and the soldier may engage in an altercation.
D) Farquhar and his wife will forget about the soldier
</span>
My answer is : A) <span>Farquhar may unknowingly walk into a trap.
Farquhar is a confederate supporter. That is why when he saw a confederate soldier, he reported of Union movements in the hopes that the Union soldiers will be defeated in the Civil War. Unfortunately, the Confederate soldier was in fact a Union soldier in disguise. </span>
This is a sentence fragment, because it is incomplete, it needs to be completed in order to be a sentence.