Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect answer choices change the meaning in important ways or leave out essential information. A. These fishes often have a problem opening their mouths while swimming. B. The streamlining of these fishes prevents them from slowing down. C. The streamlining of these fishes tends to slow down their breathing. D. Opening the mouth to breathe can reduce the speed of these fishes.