The Golgi apparatus ...

A. strings together amino acids to produce proteins

B. is the site of carbohydrate breakdown

C. stores, modifies, and packages proteins

D. is composed of stacks of membrnaeous vesicles that are continuous with one another

The correct answer is C. stores, modifies, and packages proteins

Explanation:

Golgi apparatus is an organelle that is bounded by a single membrane and it is a part of the endomembrane system. It is made up of 5-8 membrane-bound flattened sac known as cisternae.

Golgi apparatus receives the proteins which are made in the endoplasmic reticulum and it does storage, modification, and packaging of these proteins.

Protein glycosylation, sulfation, phosphorylation are the type of modification that occurs inside the Golgi apparatus. Then these proteins are packaged inside a vesicle and released into the cytoplasm from where they move to their target site. So the right answer is C.