I need to know the answers for this..?

The united states constitution gives the the power to regulate interstate commerce.

22. the effect of threshold braking is to a. cause skids. b. lock wheels. c. prevent locking of wheels. d. increase stopping distance.

Plz me i need a good grade ! 10 government is a government system where all citizens that choose to vote have a say in their government? a: communist b: democratic c: autocratic d: theocracy