Ariel is writing a paper about black holes, but he does not know anything about them. Which essential question will be most helpful in getting him started?
Abc
O When does it occur?
O What is it?
How does it happen?
O Why does it happen?

the legal limit for the drivers who can drive after consuming any amount of alcohol is 21 years.

explanation:

on november 1, 1996, a "zero tolerance law" was put into effect in the new york state.

according to this zero tolerance law, for people under the age of 21 years, it was illegal to purchase and possess alcohol or to drive after consuming any amount of it.

also, the alcohol involvement rate for the drivers under the age of 21 was roughly twice that of elderly drivers.

i cannot see any of the options                                                                        

well there are a bunch of different possibilities so your gonna have to be a bit more specific