Sorry you need a little more detail for your question.
Answer:
The answer is: Referral marketing
Explanation:
Referral marketing is like word of mouth marketing, but with a reward.
We are all social creatures, some more than others, and we like to tell our friends about things that might be considered interesting, new, good, etc (a little gossip). We also know by now that advertisement is usually not 100% accurate, so we don´t fully trust it. When one of our friends tells us that they tried product X and it was great, we do trust them and probably will end up buying product X.
Answer: b. the minor's parents or guardians are responsible
The minor's parents or guardians are responsible for the financial consequences of a minor's driving, whether the minor has a license or not. It is a law under a legal concept called "vicarious liability" imposed in most states in the U.S