Which government agency is responsible for protecting the nation’s transportation systems to ensure freedom of movement for passengers and commerce? a. environmental protection agency b. federal communications commission c. occupational safety and health administration d. transportation security administration economics high school level.

The correct answer is D. Transportation Security Administration.

-Willow I know U might not bealive me but I am Correct.

And here Is my Proof. They are an agency that organizes numerous things that are related to transportation security. Among other things, they regulate things such as quality of roads or railroads, or they participate in establishing safety standards for various types of vehicles, from cars to boats and airplanes and trucks, and they do various other things.