Correct answer "C". Wonderment and horror.
We can identify his reaction in this fragment:
"Carter starts to go "pale; he shook in every limb, and turned faint" as he saw that the horseman was his father".
A Horseman in the Sky published on April 14, 1889. The history happens during the American Civil War. It is a short story wrote by Ambrose Bierce (1842-1914) It is about a Union soldier who probably made a terrible decision between his family and his job.It shows how the war had a destructive impact on a single family.
wonderment and horror
ill need more info in order to answer yer ?