Answer: B. smooth ER
Step-by-step explanation:
The smooth endoplasmic reticulum or smooth ER is an organelle which is found in both plants and animals. In animals it is present in different body parts. In humans the liver cells contains many smooth ER. The function of these organelles is to detoxify the body by drugs and poisons by converting them into water soluble products which can be easily excreted out of the body.