Answer:
c. The sun set over the mountains.
Explanation:
A fact is information about something which is seen or proven to be true. It cannot be a whimsical expression or something that one wishes, but more of a known occurrence. A fact is the opposite of fiction.
Among the given statements, the only statement that is a fact is sentence c. The setting of the sun over the mountains is a known fact and also has occurred and is still occurring, with many people who have seen and enjoyed it.
On the other hand, the other statements are based on a personal expression about something or the other.
Thus, the correct answer is option c.
