Zones of Upwelling near the Shores of Land Masses Have

Zones of upwelling near the shores of land masses have high primary production because such zones

A) bring nutrients from the seafloor up to the surface.
B) are characterized by clear water that permits light to penetrate to an unusually great depth.
C) bring warm water to the surface.
D) trap nutrients washed into the ocean from nearby land masses.
E) have water of lower salinity than other oceanic regions.