The state animal of Karnataka, signifying its rich biodiversity:

Indian rhinoceros
Asian elephant
Bengal tiger
Lion-tailed macaque

The correct answer is: D) Lion-tailed macaque

The lion-tailed macaque is a species of macaque native to the Western Ghats of India. It is the only species in the genus Macaca endemic to India. The lion-tailed macaque is a medium-sized monkey, with males typically weighing 10-15 kg and females weighing 8-12 kg. It has a long, shaggy tail that is black on the upper side and white on the underside. The face is black, with a white beard and mane. The lion-tailed macaque is an arboreal species, and spends most of its time in trees. It is a social animal, living in groups of up to 30 individuals. The diet of the lion-tailed macaque consists of fruits, leaves, flowers, insects, and small mammals. The lion-tailed macaque is a threatened species, and is listed as “Endangered” on the IUCN Red List. The main threats to the lion-tailed macaque are habitat loss and fragmentation, hunting, and the pet trade.

The other options are incorrect because:

  • The Indian rhinoceros is the state animal of Assam.
  • The Asian elephant is the state animal of Uttar Pradesh.
  • The Bengal tiger is the state animal of West Bengal.