I think that the answer is C
Answer: Hanging valleys and waterfalls.
Explanation:
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.
The Great Barrier Reef is one of the famous wonders of the world that is situated near the East Coast of the Australian continent. In addition to that, the region is most likely known to have a huge presence of coral reefs. Actually, there are many islands east of the reef and one of which is the country of Fiji.