The correct answer is B.Golgi apparatus.
The Golgi apparatus is responsible for the modification, sorting, and packaging of proteins that have been synthesized in the rough endoplasmic reticulum (rough ER). After proteins are made in the rough ER, they are transported to the Golgi apparatus, where they may undergo modifications (such as glycosylation). The Golgi then sorts and packages these proteins into vesicles, which are either sent to other organelles (like lysosomes) or secreted outside the cell.
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