The time or period of the maximum glacial advance, Yosemite Valley was filled with a very big truck of glacier. Little tributary glaciers flowed down adjacent valleys and joined into the trunk. When the glaciers returned, the trunk glacier had cut a very deeper valley than the tributary glaciers, becoming hanging valleys where the tributary glaciers merged the trunk. Today in Yosemite National park, we can see evidence of glacier from the hanging valleys and waterfalls.
Long before, in the early ages of humanity, the planet experienced some of the most unique events that there can be as there were huge masses of ice that covered the face of earth and the temperature was far below the normal range then it is now these days. And for such reasons the climate was far cold and huge masses of ice were created by having less heat due to the very thickness of the atmosphere no sufficient amount of sun rays were able to melt down these glaciers or huge masses of ice.
While, with the time passed and atmospheric resistance to run rays decreased these glaciers moved across the globe creating huge land forms, and due to which many mountain ranges and other valleys were created.
Same is the case for the Olmstead Point Yosemite National Park are created due to movement of these glaciers across this region and created different forms of land fields or land farms.As, different ridges or we can say unique form of geological structures were created by the movement of these masses of ice across the region. And there we can see the "hanging valleys" which can be termed as the evidence for the presence of glaciers at this location in the past. Because, the research workers and geologist were able to determine the traces of such events that happened in the past.
oIs it two options? If so the answers are D and E. If it's not then I'm not sure because they are both similar to the exact same thing. ( Sorry I couldn't be more help)
