The correct answer is option B- exocytosis does not involve a transport protein
Exocytosis is a process of transporting material outside the cell enclosed in vesicles through an energy dependent process. Exocytosis is ana ctive transport method and does not include any transport protein.
whereas calcium ions pass through the membrane with the help of trans- membrane protein. These proteins make pores inside hydrophobic membrane and allow the ions to pass though it.