_______________. It is tiring physically, demands more concentration, and it is slow, perhaps ten times slower than the speed at which we comfortably manage to read, speak or listen to speech. We can only become proficient at writing by practice, and we can only write proficiently when we write spontaneously and relatively fast.
A.
Writing is a physical activity.
B.
Writing is not taught, but learned.
C.
Writing is made perfect by practice.
D.
Writing tends to be laborious in any case.