Where did the Buddha deliver his first sermon?
1. Lumbini
2. Sarnath
3. Bodh Gaya
4. Kusinagar

2

The event where the Buddha delivered his first sermon is known as the "Turning of the Wheel of Dharma" or "Dhammacakkappavattana Sutta." This significant event took place in Sarnath, which is located near Varanasi in present-day Uttar Pradesh, India.

The Buddha gave this sermon to his first five disciples in the Deer Park at Sarnath shortly after attaining enlightenment in Bodh Gaya. In this sermon, he expounded the Four Noble Truths and the Eightfold Path, which form the core teachings of Buddhism.