The correct answer is D. Horse.
The Sarnath Pillar is a sandstone pillar that was erected by the Mauryan emperor Ashoka in the 3rd century BCE. It is located in Sarnath, India, which is near the city of Varanasi. The pillar is 15 meters tall and is decorated with carvings of animals, including a humped bull, a deer, and an elephant. The horse is not one of the animals that is carved on the Sarnath Pillar.
The humped bull is a sacred animal in Hinduism and Buddhism. It is often associated with fertility and strength. The deer is also a sacred animal in Hinduism and Buddhism. It is often associated with peace and tranquility. The elephant is a symbol of power and wisdom.
The Sarnath Pillar is an important historical monument. It is a reminder of the Mauryan Empire and the spread of Buddhism. The pillar is also a beautiful example of Indian art and architecture.