Final answer:
The subject of this question is Social Studies, and it discusses a study that examines the differences in motor vehicle collision death rates by driving laws across each state in the US.
Step-by-step explanation:
The subject of this question is Social Studies.
The study mentioned in the question examines the differences in motor vehicle collision death rates by driving laws across each state in the US.
This topic falls under Social Studies as it involves analyzing laws and their impact on society, particularly in the context of transportation and public safety.
By comparing the motor vehicle collision death rates in states with more strict driving laws to those with less strict laws, the study aims to understand how different driving laws can affect road safety and reduce the number of fatalities.