Correct option is A
The correct answer is (a) Second.
• The Second Five-Year Plan (1956-1961) emphasized the development of industries and industrial base in India.
• This plan, also known as the Mahalanobis Plan, focused on heavy industries and aimed to create a robust industrial base.
Facts to remember:
• The plan was based on the model developed by the Indian statistician Prasanta Chandra Mahala Nobis.
• It aimed to boost industrialization and reduce dependence on agriculture.