While on a Field Trip near the Ocean Coastline,you Visit

While on a field trip near the ocean coastline,you visit a company that harvests jellylike substance from protists.This substance can be used as food,or in biology lab dishes for culturing organisms that have red-blue pigments,and store starch like plants.The company extracts the substance from multicellular plant-like organisms.You are observing the economic values of

A) agar and carrageenan, which are both economic commodities from protists.
B) red ooze from decaying protist cells.
C) gelatin, which makes up the cytosol of most cells.
D) carrageenan, a polysaccharide.
E) agar, a polysaccharide.