Ai giup e vơi

Towards the end of the century, there was still considerable argument over whether books should be used for information or treated respectfully and over whether the reading of materials such as newspapers was in some way mentally weakening. Indeed, this argument remains with us still in education. However, whateverits virtues, the old shared literacy culture had gone and was replaced by the printed mass media on the one hand and by books and periodicals for a specialised readership on the other.

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It can be inferred that the emergence of the mass media and specialised reading materials was an indication of _______ 
A. a decline of standards of literacy 
B. a change in the readers' interest 
C. an alteration in educationalists' attitudes
D. an improvement of printing teaching