Question

select the part whose main job is to help ribosomes make proteins. endoplasmic reticulum lysosome mitochondria cytoplasm

Explanation:

The endoplasmic reticulum (ER) has two types: rough ER (with ribosomes attached) and smooth ER. Ribosomes on the rough ER synthesize proteins, and the ER helps in protein folding, modification, and transport. Lysosomes are for digestion. Mitochondria produce energy (ATP). Cytoplasm is the fluid - like substance where organelles are suspended.

Answer:

endoplasmic reticulum