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!
Well, the cells and bricks are similar because cells are the building blocks of life and bricks are the building blocks of buildings. Cells are necessary for life, bricks are necessary for buildings.
They are different in the way of cells have nucleus'es (plural form of nucleus, I suppose) and other things inside it that do jobs, bricks don't have that.
The process is Cell Growth.
I'd say D. Since a <span>physiologist is a person who studies normal functions in living systems.</span>
