What is one purpose of NHTSA?

Answer: B — To reduce economic costs due to traffic crashes

The National Highway Traffic Safety Administration (NHTSA) has a crucial role in reducing the economic costs associated with traffic crashes. This purpose is aligned with the agency's mission to save lives, prevent injuries, and reduce road traffic crashes. By implementing various safety programs, conducting research on vehicle safety standards, and promoting public awareness about safe driving practices, NHTSA aims to mitigate the financial burdens that arise from accidents, including medical expenses, property damage, and lost productivity. Effective regulation and safety campaigns ultimately lead to fewer crashes, which directly correlates to lower economic costs for individuals and society as a whole. Other roles mentioned, such as managing road construction projects, tracking registered vehicles, and supervising vehicle sales, fall under different governmental or local jurisdictions or are not primary objectives of NHTSA. This focus on economic impacts showcases the agency's commitment to enhancing road safety and improving overall public health.