critical thinking amp ethics 3 pages essay paper about any rational subject with counter possessions

I need to write a 3 pages paper about something rational and give 3 different reasons (counter possessions) about it.

For example; There is a cat on the floor.

1-) Because I see the cat

2-) There are witnesses

3-) I’m hallucinating

You can pick anyting to write about but as i said it should be rational and you should give 3 reasons. Grammar has to be perfect.