A model of a eukaryotic cell is shown above. What is the best description of how structures 4, 5, and 6 interact to work together?
A) They mobilize lipids and ribosomes to the cytoplasm.
B) They synthesize proteins and mobilize them for excretion from the cell.
C) They detoxify the chemicals that would otherwise build up and destroy the cell.
D) They harness energy from food and small energetic molecules engulfed by the cell.