Yes it was formed by a glaciers.
I'm thinking A. Because uniformitarianism means the theory that changes in the earth's crust during geological history have resulted from the action of continuous and uniform processes.
Why do tides impact ocean? its because the moon and sun's pull cause two bulges or high tides in the ocean on opposite sides of the earth. However, when the sun and the moon reinforce each others gravitational pulls, they create larger than normal tides called spring tides. Hope it helps
