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. As a glacier moves, it leaves behind rock formations that have been engulfed, pushed, and dragged by the glacier. B. Glaciers reshape the landscape by carving into rock and transporting the resulting debris to distant locations. C. Glaciers carve the hardest rock formations with great energy and slowly reshape them into debris. D. The tremendous energy of slowly moving glaciers transports and finally deposits rock debris into large rock formations.