To solve this problem, we need to identify which organelles are part of the endomembrane system.$\newline$The endomembrane system is a group of membranes and organelles in eukaryotic cells that work together to modify, package, and transport lipids and proteins.$\newline$Let's analyze each option:$\newline \bullet$Endoplasmic Reticulum (ER): Part of the endomembrane system. It is involved in the synthesis of proteins and lipids.$\newline \bullet$Golgi Complex: Part of the endomembrane system. It modifies, sorts, and packages proteins and lipids for secretion or delivery to other organelles.$\newline \bullet$Lysosomes: Part of the endomembrane system. They contain digestive enzymes to break down macromolecules.$\newline \bullet$Vacuoles: Part of the endomembrane system. They are involved in storage and transport within the cell.$\newline \bullet$Mitochondria: Not part of the endomembrane system. They are involved in energy production.$\newline \bullet$Ribosomes: Not part of the endomembrane system. They are involved in protein synthesis but are not membrane-bound.$\newline$Now, let's evaluate the options:$\newline \bullet$Option 1: Endoplasmic reticulum, Mitochondria, Ribosomes, and Lysosomes.$\newline$ - Mitochondria and Ribosomes are not part of the endomembrane system.$\newline \bullet$Option 2: Endoplasmic reticulum, Golgi complex, Lysosomes, and Vacuoles.$\newline$ - All these organelles are part of the endomembrane system.$\newline \bullet$Option 3: Golgi complex, Mitochondria, Ribosomes, and Lysosomes.$\newline$ - Mitochondria and Ribosomes are not part of the endomembrane system.$\newline \bullet$Option 4: Golgi complex, Endoplasmic reticulum, Mitochondria, and Lysosomes.$\newline$ - Mitochondria is not part of the endomembrane system.$\newline$Therefore, the correct answer is Option 2: Endoplasmic reticulum, Golgi complex, Lysosomes, and Vacuoles.