Answer:
B
Step-by-step explanation:
Most of the liver's mass is composed of cells known as hepatocyte. The hepatocytes are involved in series of functions including detoxification and excretion of exogenous and endogenous substances.
The Smooth Endoplasmic Reticulum (SER) is abundant in hepatocytes, and since the hepatocyte constitutes a large part of the liver, the SER is therefore, the most abundant organelle in the liver and an active participant in its detoxificating function.
The rough endoplasmic reticulum is more involved in protein synthesis