Question

unfinished proteins transported from the er are modified in the cells
a nucleus
b smooth er
c ribosomes
d golgi apparatus.

Explanation:

The Golgi apparatus modifies, sorts, and packages proteins and lipids that have been transported from the endoplasmic reticulum (ER). The nucleus contains genetic material and is not the site of protein modification from the ER. The smooth ER is involved in lipid synthesis and detoxification, not protein modification from the ER - transported proteins. Ribosomes are the sites of protein synthesis, not modification of proteins from the ER.

Answer:

D. Golgi apparatus