Question

select the part whose main job is to help ribosomes make proteins. rough endoplasmic reticulum smooth endoplasmic reticulum golgi mitochondria

Explanation:

The rough endoplasmic reticulum has ribosomes attached to its surface and plays a major role in protein - synthesis by ribosomes. The smooth endoplasmic reticulum is involved in lipid synthesis and detoxification. The Golgi apparatus modifies, sorts, and packages proteins and lipids. Mitochondria are the power - houses of the cell, generating ATP.

Answer:

rough endoplasmic reticulum