TOEFL Reading: ETS-TOEFL阅读机经 - Y45I1Q936J_8K1SSL$

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. Agricultural production has been more successful in northeastern Japan than along the Inland Sea, where topography and climate make life difficult for people. B. Topography and climate have combined to limit agricultural production in northeastern Japan, resulting in an increased risk of crop failure and hardship. C. Along the Inland Sea, where topography makes the climate more severe, decreased agricultural output has resulted from crop failure and hardship. D. The risk of crop failure in northeastern Japan has caused greater hardship than have climate and topography.