It helps with executive functions, such as behaving in socially appropriate ways.
C is the most assertive refusal of all the examples, and it is also the safest. Bravo to Lindsay for not allowing people under the influence drive her around, it isn't a good idea to use subtances and operate machinery. Hope this helps!
Alright two things,
1. The answer is the U.S. Department of Justice
2. It's called the Drug Enforcement *Administration*
