13-915. "Cause"; explained.
An injury or damage is caused, or contributed to, by an act or a failure to act when the act or failure to act played any part, no matter how small, in bringing about the injury or damage.
USE NOTES
This instruction shall be used in every case where the cause of the injury or damage is an issue.
You are being directed to the most recent version of the statute which may not be the version considered at the time of the judgment.