Question

select the part whose main job is to make proteins. ribosome golgi nucleus chloroplast

Explanation:

Ribosomes are the cellular structures responsible for protein synthesis. They read the genetic information (mRNA) and assemble amino acids into polypeptide chains (proteins). The Golgi apparatus modifies, sorts, and packages proteins. The nucleus contains genetic material. Chloroplasts are involved in photosynthesis. So, the part whose main job is to make proteins is the ribosome.

Answer:

ribosome