It's because the person has chosen not to do it.

What a person chooses to say after having a long time to think about it can tell us a lot.

And no matter the situation, a person can choose hope as a means of looking toward the future.

What sort of crazy person would choose to have a hard time?

In modern times any person may choose to use a name that is not the property of another.

The person should choose the time of day that seems right.

If one person chose to wake up the rest, he or she could certainly do so.

The person who was coming must necessarily choose this place.

There are a lot of jobs that a person can choose to do in the army.

Why ever on earth would a person choose to be alone?