The condition of equilibrium that results in the displacement of the mantle by the continental and oceanic crust is known as a. erosion. b. topography. c. root rebound. d. isostasy.

The equilibrium condition resulting in displacement of mantle by the continental and oceanic crust is known as Isostasy.

Option D

Explanation:

The term Isostasy can be segmented into two words such as “isos” whose meaning is “equal” and “stasis” whose meaning is “standstill”. This explains a state of a gravitational equilibrium that arises between the crust of the Earth and mantle in such a way that the crust floats at an elevation.  

The density and thickness decides the elevation. Isostasy is not responsible in upsetting equilibrium but it recovers it from it.  

Isostasy is not responsible in upsetting equilibrium but it recovers it from it.