TOEFL Listening: TPO-TOEFL阅读TPO - E2238484ZPST3BS4N$

Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information A. The high cost to investors of developing trade by sea between East and West indicates the great size of the profits that such trade could produce B. The profits that could be created by sea trade between East and West were immense compared with the investment required to develop such trade C. The increase in commercial activity by using sea routes reflects the importance trade between East and West had for investors seeking great profits D. Because people made large investments in sea commerce between East and West, they expected to make immense profits