The correct answer is Sarnath. Sarnath -It is a major Buddhist pilgrimage center located 10 km northeast of Kashi or Varanasi. When Buddha attained enlightenment he first left for Sarnath and gave his first sermon of the Dharmachakrapravartana Sutra. Additional Information?Kapilvastu -It is one of the districts of Nepal Province 5, Nepal. It was the capital of the kingdom of Suddhodana, the father of Mahatma Buddha. Here Lord Buddha spent his childhood. Lumbini -It is the birthplace of Lord Buddha. It is located in Nepal. Bodh Gaya -It is a town in the Gaya district of Bihar state. Here Mahatma Buddha attained enlightenment under the Bodhi tree.