The correct answer is option 3: Second Five-Year Plan to the Seventh Five-Year Plan.
The Nehru-Mahalanbobi strategy of development refers to the development model and planning approach implemented in India during the early years of its independence. This strategy was formulated by Jawaharlal Nehru, the first Prime Minister of India, and P.C. Mahalanobis, an Indian economist.
The strategy aimed at promoting rapid industrialization and self-sufficiency in key sectors of the economy. It was characterized by a focus on heavy industry, public sector development, and prioritizing the role of the state in economic planning and intervention. The strategy emphasized the development of large-scale industries and the utilization of domestic resources to reduce dependence on imports.
The Nehru-Mahalanobis strategy of development guided the planning practice in India from the Second Five-Year Plan (1956-1961) to the Seventh Five-Year Plan (1985-1990). During this period, the Indian government emphasized on industrial growth, investment in infrastructure, and the establishment of public sector enterprises.
Overall, the Nehru-Mahalanobis strategy played a crucial role in shaping India`s economic development during the initial decades after independence.