The Process of Seafloor Spreading Involves the Creation of New

Multiple Choice

The process of seafloor spreading involves the creation of new crust and its continuous movement away from its source.Which of the following serve as that source?

A) mid-oceanic ridges
B) hotspots on the ocean floor called magma oases
C) oceanic trenches,oftentimes several thousand meters below the surface of the seafloor
D) the sources are varied,with little seeming logic to their locales