Which of these is the best example of the ergonomic approach to reducing accidents?

a) A computer company increased font sizes in order to reduce eyestrain.
b) A psychologist uses tests to assess personality characteristics associated with accident proneness.
c) A chair company manufactures new chairs in a variety of colors so they can be distinguished by buyers.
d) A car company moved radio controls away from the gear shift to reduce the chances of accidentally moving the gear.

D