According to the OSHA computer workstations checklist, when you work at a computer, you should hold your head ____. 

A. upright or in-line with the torso
B. facing slightly to the left
C. bent down at a 12-degree angle
D. tilted slightly back
E. facing slightly to the right

A. upright or in-line with the torso
Hold your head and neck upright and in-line with the torso, not bent down or back.