Which sentence states a fact?
People who vote in every election are the best citizens. In the United States, presidents are elected every four years.
A fact is something that can be proved to be true. Facts can be proved by observing, measuring, or studying information.
The flag of the United States has 13 stripes.
This is a fact. It can be proved by looking at the flag and counting the number of stripes.
An opinion is something that a person believes, thinks, or feels. An opinion cannot be proved true.
The flag of the United States is easy to draw.
This is an opinion. People may have different opinions about what makes a flag "easy" to draw.
The second sentence states a fact.
In the United States, presidents are elected every four years.
It can be proved by reading a book about the United States government.
The first sentence states an opinion.
People who vote in every election are the best citizens.
Best shows what a person believes, thinks, or feels. Another person might have a different opinion about what makes one citizen better than another one.