The Buddha attained nirvana at __________

Answer: Option D

The term "nirvana" in Buddhism refers to the final liberation from the cycle of birth, death, and rebirth (samsara).

Gautama Buddha, the founder of Buddhism, attained enlightenment (bodhi) under the Bodhi tree at Bodh Gaya.

After spreading his teachings for many years, he attained mahaparinirvana (final nirvana after death) at the age of 80.

This event took place in Kusinagara, which is located in present-day Uttar Pradesh, India.

Sarnath is the place where Buddha gave his first sermon (Dharmachakra Pravartana), and Sanchi is known for its Buddhist stupas but is not related to his nirvana.

Therefore, Buddha attained nirvana at Kusinagara.

Correct Answer: Option D