The correct option is A Animal pole
Many vertebrate eggs are telolecithal, meaning they have large amounts of yolk concentrated at one end of the cell, known as the vegetal pole. The opposite, more metabolically active pole is the animal pole. The eggs of amphibians are moderately telolecithal (mesolecithal). In the egg of amphibian, the sperm penetrates the egg at the metabolically active animal pole.