Question

protein synthesis occurs in the: vacuole lysosome endoplasmic reticulum ribosome

Explanation:

Protein synthesis occurs in ribosomes. Ribosomes are cellular structures that read the genetic code (mRNA) and assemble amino acids into proteins. The endoplasmic reticulum (especially the rough endoplasmic reticulum, studded with ribosomes) is involved in protein processing and transport after synthesis. Vacuoles are for storage, and lysosomes are for digestion.

Answer:

Ribosome