Read paragraph 9.

(9) Will did not answer, but both listened intently to the sound which had interrupted Captain Dall's discourse. It was evident that the officer and men of the watch had also heard it, for they, too, had ceased to walk to and fro, and their figures could be dimly seen in a listening attitude at the gangway.

Which phrase has the most similar connotative meaning to the word discourse as it is used in the passage?

A. long-winded explanation
B. engaging conversation
C. quiet discussion
D. heated debate
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