since is says plural promise(s) i pick b. all of the above. because you cant just pick one its clever word play
The balance of forces between internal pressures under continents and those under ocean basins is called the isostasy.
<h3>What is an isostasy?</h3>
It should be noted that an isostasy is the state of gravitational equilibrium that's between the Earth crust and the mantle.
According to the isostasy theory, a mass above sea level is supported by a mass below sea level, and as a result, the depth of compensation is the depth at which the Earth's total weight per unit area is equal everywhere around.
In this case, isostasy is the balance of forces between internal pressures under continents and those under ocean basins.
Therefore, based on the information, the answer is isostasy.
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The answer would be The Berlin conference.
