Which laws or rules prevent or reduce injury by preventing crashes?
a. motorcycle helmet laws
b. seat belt laws
c. impaired driving laws
d. child seat laws

The correct answer is c. impaired driving laws

Explanation:

Impaired driving means driving a motor vehicle in the influence of alcohol which is above the legal limit of blood alcohol level. Every year impaired driving leads to thousands of deaths in the U.S. and it accounted for more than 30% of total traffic-related fatalities in 2012.

The impaired driving law in U.S defines the limit of blood content level of alcohol while driving and this limit is 0.08% above which people are fined if caught driving. This rule prevent and reduce the injuries and death by preventing crashed because impaired driving leads to many crashes which reduces by proper implementation of this law. So the right answer is c.

d would be your answer