Answer:
d. opinions
Explanation: To support evidence of a claim or counterclaim, an author needs to use facts, not opinions. An opinion could show that the author supports or doesn't support the claim, (Or counterclaim) but wouldn't use any evidence to say whether the claim is true or false.
The class of '09 held its graduation ceremony at 7 o'clock
It shows him that its not safe and that at any moment his friends or family could be gone.