Gautam Buddha attained enlightenment and became the Buddha in which place in Bihar?

Bodh Gaya
Vaishali
Nalanda
Rajgir

Gautama Buddha attained enlightenment and became the Buddha under the Bodhi tree in Bodh Gaya, Bihar.

Bodh Gaya is a town in the Indian state of Bihar. It is located in the Gaya district, about 100 kilometers (62 mi) south of Patna, the capital of Bihar. Bodh Gaya is one of the four holy sites related to the life of Gautama Buddha, the founder of Buddhism. The other three sites are Lumbini, where he was born; Sarnath, where he gave his first sermon; and Kushinagar, where he died.

The Mahabodhi Temple, a UNESCO World Heritage Site, is located in Bodh Gaya. The temple was built in the 3rd century BCE by Emperor Ashoka. It is one of the most important Buddhist temples in the world.

The Bodhi tree, under which Gautama Buddha attained enlightenment, is located in the Mahabodhi Temple complex. The tree is a descendant of the original Bodhi tree, which is said to have been planted by Gautama Buddha himself.

Bodh Gaya is a popular pilgrimage destination for Buddhists from all over the world. The town is home to a number of monasteries and temples, as well as a number of Buddhist schools and universities.