Which sentence states a fact?
Riding the subway is the best way to get around New York City. New York City's first subway started running on October 27, 1904.
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.
New York City's first subway started running on October 27, 1904.
It can be proved by reading a book about the history of New York City.
The second sentence states an opinion.
Riding the subway is the best way to get around New York City.
Best shows what a person believes, thinks, or feels. Another person might have a different opinion about which way is the best.