In measuring the orientation of the runner's thoracic (chest) with respect to the incline hill they are running up, you would measure which of the following?
1) The angle between the runner's chest and the incline hill
2) The distance between the runner's chest and the incline hill
3) The speed at which the runner is running up the incline hill
4) The time it takes for the runner to reach the top of the incline hill