The correct option is C Mucoid tissue
Wharton's jelly is a gelatinous substance within the umbilical cord, also present in the vitreous humor of the eyeball, largely made up of mucopolysaccharides like hyaluronic acid and chondroitin sulphate. The Wharton's jelly contains mucoid connective tissue and fibroblast-like cells.
So, the correct answer is option B.