The correct option is C When part of apical cytoplasm is lost
Apocrine secretion
Apocrine secretion is carried out by apocrine glands where the secretory material is accumulated at the tip of the secretory cell which later gets pinched off to release the secretory product into a duct. Therefore, the apical cytoplasm of the cell is lost during secretion. For example mammary glands.
Final answer
c. When part of apical cytoplasm is lost