Answer: Option D.
All of the above.
Step-by-step explanation:
Proboscidea , Artiodactyla , Lagomorpha are all vegetarians and vegetarians are animals that feed on plants i.e grasses, shrubs e.t.c.
These order of animals are refered to herbivorous animals i.e animals that feed on plants and they have two pairs of growing incisors,molars and premolars.
Members of lagomorphs are rodents, hares, rabbit, pikas e.t.c.
Artiodactyla members are cattles, camels, pigs e.t.c. These order have tusks for defending themselves.
Proboscidea include elephants.