Amajor cause of the differences in elevation between ocean basins and continents is

Isostatic adjustment.

Explanation:

This implies the difference between the ocean basins and continental landmass. As if the continents have grown due to acceleration of shelf geosynclines its due to the geosyncline floor could have been grown across the metamorphism. The former silica basements might have been folded during mountain building. Thus it's inevitable that the continents and oceanic basins are now operating in a modified away. The shoreline denudation realm of erosion and deposition is critical for dynamic geology. Sediments are now being carried at greater depths below which is caused by the subcrustal flow or isostatic flow. And these movements are shallow so shallow that they hardly noticed but rotate in a cyclic format.

The answer is 0.01 meter