__________ Leads to a 9 Percent Reduction in __________ Injuries

__________ leads to a 9 percent reduction in __________ injuries, a leading cause of permanent physical disability and death in school-age children.

A) Wearing protective helmets; head
B) Proper use of car seats and seat belts; spinal
C) Teaching children to use crosswalks; pedestrian
D) Improving playgrounds; motor vehicle accident