The RER in the cell synthesised protein which would be later used in building the plasma membrane. But it is observed that the protein in the membrane is slightly different from the protein made in the RER. The protein was probably modified in another cell organelle. Identify that organelle which modifies a protein from the given diagram.
From the given options 'D' represents golgi complex. Golgi bodies are the organelles which modifies proteins by adding carbohydrates or other substances.