Steel and oil industries were helped greatly by automobile manufacturing. Tourism and was also helped by increased automobile ownership.
Answer:
for examples: you are riding a bike before you ride a bike wear you gear first.
because gears can helps you from getting injury.
for another examples: you are on the road to don't get injury or anything you need to follow all the rules and beware of any situation that can happen in the road.
because if you did not follow the rules you may get injury or worst.
I'm pretty sure it's B. Slows objects down.
