The Second Five Year Plan in India, also known as the "Mahalanobis Plan," called for the establishment of a Socialist pattern of society. This plan was named after its main architect, P.C. Mahalanobis, an Indian economist and statistician.
Option 1, the Harrod-Domar Plan, is not the correct answer. The Harrod-Domar model is an economic theory that focuses on the relationship between investment and economic growth. It is not directly related to the Second Five Year Plan in India.
Option 3, the Nehru Plan, is also not the correct answer. There is no specific plan named after Jawaharlal Nehru, the first Prime Minister of India, that is related to the establishment of a Socialist pattern of society.
Option 4, the People`s Plan, is not the correct answer either. While the People`s Plan was a concept proposed by M.N. Roy, an Indian revolutionary, it was not specifically associated with the Second Five Year Plan in India.
Therefore, the correct answer is option 2, the Mahalanobis Plan, which is named after the architect of the Second Five Year Plan and reflects the goal of establishing a Socialist pattern of society in India.