Pick and copy all the incorrect options for the following question:

Three baseball players investigate to see who can throw a baseball the farthest. They mark off an area on the playground for their investigation. Which should they keep constant?

Options:
- Height of players
- Color of the baseballs thrown
- Order in which the players throw
- Spot from which players throw



- Height of players



- Color of the baseballs thrown



- Order in which the players throw



