The correct option is B Zona pellucida
The zona pellucida is a specialized extracellular matrix, which surrounds the egg in the ovary. Zona pellucida (ZP) is composed of different types of glycoproteins. There is ZP domain which is a signature domain comprised of approximately 260 amino acid residues. It has an N-terminal hydrophobic signal peptide sequence.
Thus, the correct answer is option (B).