Free Choice as in to define what you want to happen. To define the future, if you will.
The common definition.
For anyone who didn't get me the first time
It doesnt exist, because predefined things that have happened since the beginning have created causes and effects untill now.
Things have influenced your thinking, which means that what you will do is predetermined.
Example. The thought "I am going to post on what I think about free choice" has been predefined by an occurrence which has happened due to an occurrance and so on and so forth until the beginning. And trying to stop that is predetermined too, because something CAUSED you to think about changing that. You are guided by what has already happened.
In essense, you could say that EVERYTHING is predefined, meaning a set timeline for our universe, making it linear.
The future has been determined since the beginning.
If you jump high enough you'll hurt your ankles when you land.