The high level of Chinese literacy was due to
(A) free schooling for all classes of society.
(B) the introduction of an alphabet during the Song dynasty.
(C) the invention of movable-type printing and cheap paper.
(D) the simplicity of the Chinese system of writing.
(E) priests and Confucian theology, which insisted that Heaven wanted all people to be able to read and to write the Confucian classics.
Answer: C