Which sentence states a fact?
The region north of the Arctic Circle is the most miserable place on earth. North of the Arctic Circle, there are days each year when the sun does not completely rise or set.
A fact is something that can be proved to be true.
The month of July has more days than the month of June.
This is a fact. It can be proved by looking at a calendar and counting the number of days in each month.
An opinion is something that a person believes, thinks, or feels. An opinion cannot be proved true.
July is a better month than June for camping.
This is an opinion. People may have different opinions about which month is "better" for camping.
The second sentence states a fact.
North of the Arctic Circle, there are days each year when the sun does not completely rise or set.
It can be proved by looking up information about the Arctic Circle.
The first sentence states an opinion.
The region north of the Arctic Circle is the most miserable place on earth.
Most miserable shows what a person believes, thinks, or feels. Another person might have a different opinion about what makes a place miserable.