The correct option is
D All of the above
Axolotl is the larva of
Amblystoma tigrinum (tiger salamander).
Axolotls are those amphibians which reach adulthood without undergoing metamorphosis. Axolotl larva shows
the structural features similar to the typical salamander larvae which include external gills and a caudal fin which extends from behind the head to the vent i.e. laterally compressed tail. So, the correct answer is option D.