Concept:The endomembrane system is a group of membrane-bound organelles that work together to modify, package, and transport proteins and lipids.
Explanation:The endomembrane system includes only those organelles that are directly connected or communicate via vesicles.
It consists of the endoplasmic reticulum, Golgi complex, lysosomes, and vacuole.
Chloroplasts, mitochondria, and peroxisomes are not part of the endomembrane system because they have separate functions and are not involved in the same vesicular transport pathway.
Answer:B. endoplasmic reticulum, Golgi complex, lysosomes and vacuole