According to the whole-mantle model of mantle convection:
A. small amounts of material from the mantle move upward to the surface.
B. slabs of cold oceanic crust move down and into the lower mantle.
C. large chunks of continental crust are pulled down into the lower mantle.
D. material from the core-mantle boundary rises into the mantle to form mantle plumes.
According to the whole-mantle model of mantle convection small amounts of material from the mantle move upward to the surface. The correct option among all the options that are given in the question is the first option or option "A". I hope that this answer has actually come to your help.
