Which of the sentences below best express the essential information in the highlighted sentence in the passage? In correct choices change the meaning in important ways or leave out essential information. A. Because of their deformed shapes at high altitudes, trees are not likely to be seriously harmed by the strong winds typical of those altitudes. B. As altitude increases, the velocity of winds increase, leading to a serious decrease in the number of trees found at high altitudes. C. The deformed shapes of trees at high altitudes show that wind velocity, which increase with altitude, can cause serious hardship for trees. D. Increased wind velocity at high altitudes deforms the shapes of trees, and this may cause serious stress for trees.