The primary function of causes, effects, quotations, facts, and statistics in a paragraph is to restate or refine the topic sentence. support or illustrate the topic sentence.
connect sentences for transition.
create the topic sentence.

B.  support or illustrate the topic sentence.

Explanation:

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explanation:

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"the tune the he might never know again." this part build anticipation. dexter got extremely happy by the piano tune. he could see what he was living at that moment in his life throught this feeling. the reader might want to learn more about his happy life. in fact, he called it a state of   'ecstasy'. the fact that he had got in a mood of intense appreciation and that everything about him was extremely bright and glamorous might lead the reader to feel that this state of happiness may not last long. the two parts from the excerpt that exemplify the anticipation are: " the sound of the "; " it was a know again."