Which sentence states a fact?
A: Hurricane Rita was the worst storm in history.
B: Hurricanes are tropical storms with strong winds and heavy rains.
The second sentence states a fact.
Hurricanes are tropical storms with strong winds and heavy rains.
It can be proved by looking up hurricane in the dictionary.
The first sentence states an opinion.
Hurricane Rita was the worst storm in history.
Worst shows what a person believes, thinks, or feels. Another person might have a different opinion about what makes one storm worse than others.