the nucleus a ribosome a mitochondrion the Golgi apparatus
I gave my students this multiple choice question: A cell completes the synthesization of a protein by adding a carbohydrate to the protein's structure. At which site in the cell is the carbohydrate added?

Only one answer is correct among these 4 choices:
- the nucleus
- a ribosome
- a mitochondrion
- the Golgi apparatus

Could you tell me which one is correct?

the Golgi apparatus