Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage.

Cartoon films have very few limits. If you can draw something, you can (1) ________ it move on the cinema screen. The use of new ideas and advanced computer programs means that cartoons are becoming exciting again for people of (2) ________ ages. By the end of the 1970s, the cinema world had decided that cartoons were only for children. But soon (3) ________, one or two directors had some original new ideas. They proved that it was possible to make films in which both adults and children could share the fun. However, not (4) ________ cartoon film was successful. The Black Cauldron, for example, failed, mainly because it was too frightening for children and too childish for adults. Directors learn from this (5) ________, and the film companies began to make large amounts of money again.

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