The correct answer is (a), Acharya Vinoba Bhave.
Acharya Vinoba Bhave was a Hindu monk, social activist, and politician who was one of the chief architects of the Sarvodaya movement. He was also a close associate of Mahatma Gandhi and played a key role in the Indian independence movement.
The book “Indian Economy: A Gandhian Blueprint” was published in 1954 and is a collection of Bhave’s writings on economics. In the book, Bhave argues that the Indian economy should be based on Gandhian principles of simplicity, self-reliance, and non-violence. He also criticizes the Indian government’s economic policies, which he believes are based on Western models that are not appropriate for India.
The other options are incorrect.
(b) Morarji Desai was a politician who served as the Prime Minister of India from 1977 to 1979. He was a member of the Indian National Congress and a close associate of Mahatma Gandhi.
(c) Jai Prakash Narayan was a politician and social activist who was one of the leaders of the Indian independence movement. He was also a key figure in the Emergency, a period of authoritarian rule in India from 1975 to 1977.
(d) Charan Singh was a politician who served as the Prime Minister of India from 1979 to 1980. He was a member of the Bharatiya Lok Dal and a leader of the peasant movement in India.