'Finally' is the answer the others don't make sense if you try to read them with the rest of the sentence.
WHAT? I? DONT? UNDERSTAND? YOU? SO? PLEASE? FORGIVE? ME?
Time Safari, Inc. guarantees only B. THE DINOSAURS.
This is a part of the story "A Sound of Thunder", where the character, Eckels, entered the office of Time Safari, Inc. and in a conversation with the company clerk, Eckels found out that the company guarantees nothing but encounters with dinosaurs.
Answer:
C. The sound of the clock striking midnight quivered through the icy hallways, startling the restless house.
Explanation: