Which sentence states a fact?
Seattle is prettier than New York City. More than eight million people live in New York City.
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 first sentence states a fact.
More than eight million people live in New York City.
It can be proved by looking up how many people live in New York City.
The second sentence states an opinion.
Seattle is prettier than New York City.
Prettier shows what a person believes, thinks, or feels. Another person might have a different opinion about what makes a city pretty.