The right option is d.
comparative advantages
The comparative advantages
pattern of organization places several alternatives side by side and show why one
of them is more advantageous than the other. The items or alternatives to be
compared are in relation to one another and are functionally equal.
I think it is NAD, this ensures that the NAD can go back to glycolysis where it can again be reduced and go back through anaerobic respiration.
A sea sponge is what mimics a synthetic sponge
The animal it gave birth to
I think #1 is pointing to the cell membrane
#2 is pointing to the nucleus
#3 is pointing to the chromosomes
and #4 is pointing to the cytoplasm