In Hess's Concept of Plate Tectonic Movement, the Deep Furrow

Multiple Choice

In Hess's concept of plate tectonic movement, the deep furrow that runs along the center of the mid-ocean ridges represents

A) convective cells of the mantle.
B) the site of newly formed crust that is moving laterally in two directions.
C) the site of apparent polar wandering and deep mantle convection.
D) the effect of low-velocity earthquake waves.