Answer:
The statement which tells a fact is:
C. an explosion damaged the spacecraft.
Step-by-step explanation:
Options A, B, and D all present opinions. That means people may or may not agree with what is being said. For instance, someone may very well think numbers are not essential. Someone else may say that numbers are not interesting at all, and so on.
On the other hand, letter C does not present an opinion. Rather, it states a fact. A fact is something that can be proved to be true. An explosion and the damage it causes are easily provable. If people can see it, they will not be able to think it false. Therefore, the correct option is letter C.