What is the best subject

What techniques do you use to come to a smooth stop? (driver's education)

Which of the following powers is held only by the federal government? a. power to make a treaty b. power to set marriage laws c.power to create driving laws d.power to set the legal drinking age

Sleep hygiene is a. brushing your teeth before bed b. making sure your sheets are clean c. practicing good habits to make sure you're rested and alert d. seeing a sleep doctor to understand clean sleeping