Answer;
Golgi apparatus or golgi complex.
Golgi complex is the organelle that modifies proteins before they are either used by the cell or transported out of the cell.
Explanation;
Golgi complex is also called golgi apparatus or golgi bodies; is made up of membrane-bound sacs .
Its function is to process and bundle macromolecules like proteins and lipids as they are synthesized within the cell. That is; modifying, sorting and packaging of proteins for secretion.
Additionally; it is also involved in the transport of lipids around the cell, and the creation of lysosomes.