The downward sliding characteristic of ridge-push is the result of

a. uneven heat distribution.

b. paleomagnetism.

c. gravity.

d. seafloor spreading.

The answer is C. The downward sliding characteristic of ridge-push is the result of gravity. Ridge-pus also known as sliding plate force is a mechanism for plate tectonics motion. Ridges in mid-ocean locations are elevated than the ocean floor, the gravity will cause the ridge to push the lithosphere.