TOEFL Listening: TPO-TOEFL阅读TPO - ET4U16UK1W15SST9N$

According to paragraph 4 which of the following is true of the maritime code developed in Europe in the fourteenth century? A. It mapped out lanes in the seas for trading ships to follow B. It defined the ways in which people should behave at sea C. It replaced an earlier code that could not be adapted to the sea trade with the East. D. It gave instructions on how to navigate a ship