The Adivasi Mahasabha which later renamed as the Jharkhand Party was organised by

Birsa Munda
Jaipal Singh Munda
Vinod Bihari Mahto
Prabhat Kumar

The correct answer is B. Jaipal Singh Munda.

The Adivasi Mahasabha was a political party in India that was founded in 1938 by Jaipal Singh Munda. The party was formed to represent the interests of the Adivasi people of India, who are also known as tribals or indigenous peoples. The Adivasi Mahasabha was initially successful in winning elections in some parts of India, but it eventually lost its momentum and was dissolved in 1950.

Jaipal Singh Munda was a prominent Adivasi leader who played a major role in the Indian independence movement. He was born in 1903 in the village of Ulihatu in the Ranchi district of Jharkhand. He was educated at the University of Calcutta and the London School of Economics. After returning to India, he worked as a lawyer and journalist. He was also a member of the Indian National Congress.

In 1938, Jaipal Singh Munda founded the Adivasi Mahasabha. The party’s main goal was to improve the lives of the Adivasi people. The party also campaigned for the rights of the Adivasi people, including the right to land and education.

The Adivasi Mahasabha was initially successful in winning elections in some parts of India. However, the party eventually lost its momentum and was dissolved in 1950. Jaipal Singh Munda continued to work for the rights of the Adivasi people until his death in 1968.

The other options are incorrect because they are not the names of the person who founded the Adivasi Mahasabha.