The correct option is D Wharton's jelly
●Wharton's jelly was discovered by the English physician, Thomas Wharton in the 17th century.
●It is a gelatinous substance that is responsible for the insulation and protection of umbilical cord in the womb.
●It is made up of mucopolysaccharides like hyaluronic acid and chondroitin sulphate.
●It is an example of embryonic connective tissue.