How Is It That the Open Ocean Produces the Highest

Multiple Choice

How is it that the open ocean produces the highest net primary productivity of Earth's ecosystems,yet net primary productivity per square meter is relatively low?

A) Oceans contain more nutrients as compared to other ecosystems.
B) Oceans receive a lesser amount of solar radiation per unit area.
C) Oceans have the largest area of all the many ecosystems on Earth.
D) Ocean ecosystems are less diverse with more autotrophs per unit area.
E) Oceanic producers are generally much smaller than oceanic consumers.