Which membrane-enclosed cell organelle would you expect the plasma cells to have in abundance?

The type of immune cells that makes a large amount of a specific antibody is known as plasma cells. These cells are basically differentiated terminally from the B-type of lymphocytes. Many organelles are present in these cells performing the functions they are assigned with or they are made for such as; Ribosomes, Mitochondria, Lysosomes, Endoplasmic Reticulum, Golgi apparatus, and the plasma membrane. The most abundantly found organelle in the plasma cells is Rough Endoplasmic Reticulum combined with the well-developed Golgi apparatus.

the answer is d (apex) good luck : ))