A) - I would say as well, especially academic writing.
About B and C- I would say it depends - reading what? novels? organizing what? your paper? out of the two I would say that C) organizing is the better choice but it is also useful in science.
You must walk in the halls, not run, you can get seriously hurt. You can trip and scar up your knees, you can tumble and fall, and hit your behind. hope this helps :)
