The Mid- Atlantic ridge is a ____________.
A. Island
B. Lagoon
C. Submerged mountain range
D. Plateau

Hint: Ocean bottom spreading is a cycle that happens at mid-sea edges, where the new maritime outside is framed through volcanic action and afterward bit by bit moves from the edge. The possibility that the ocean bottom itself moves (and conveys the landmasses with it) as it extends from a focal hub was proposed by Harry Hess.

Complete answer:
As indicated by this hypothesis, the serious warmth produced by radioactive substances in the mantle looks for a way to get away and offers an ascend to the arrangement of convection flows in the mantle. Any place rising appendages of these flows meet, maritime edges are framed on the ocean bottom and any place the weak appendages meet, channels are shaped. The landmasses lining the Atlantic Ocean, for instance, are accepted to be moving ceaselessly from the Mid-Atlantic Ridge, a submerged mountain range, at a pace of 1–2 cm every year, hence expanding the expansiveness of the sea bowl by double that sum. Volcanic emissions are regular up and down the mid-maritime edges and they carry tremendous measures of magma to the surface around there. The stones equidistant on one or the other side of the peak of mid-maritime edges show noteworthy similitudes. The deep trenches have profound situated seismic tremor events while in the mid-maritime edge territories, the shudder foci have shallow profundities.

Thus, option (C) is correct.

Note: Ocean bottom spreading clarifies mainland float in the hypothesis of plate tectonics. Ocean bottom spreading proposed the magma as the reason for new covering and subduction of the hull at the sea landmass limits. This was additionally extended by researchers to propose plates and their development because of this magma. It is these structural plates and not the mainlands’ that have been moving since the initiation of earth.