Dicke says this because the world’s population is growing and soon there will not be enough meat for everyone.
Answer:
Forms of passage of substances across the blood–brain barrier. (A) Passive diffusion: fat-soluble substances dissolve in the cell membrane and cross the barrier (e.g., alcohol, nicotine and caffeine). Water-soluble substances such as penicillin have difficulty in getting through.
The most logical answer is because adults have more experience driving than teens because most of the time, practice helps to make perfect. But there are some teens who are better drivers than adults and teens that aren't great at driving at all, and the same can be with adults!
I believe the answer is (a) variability
