India's First Five Year Plan covered the period from , which mainly focused in the development of the primary sector.

Correct option is D

The correct answer is (D) 1951 to 1956.

Explanation:
India's First Five Year Plan was launched in 1951 and covered the period from 1951 to 1956. It mainly focused on the development of the primary sector, including agriculture and irrigation.

Information Booster:

• Focus: Development of agriculture and irrigation.
• Planning Commission: Headed by Jawaharlal Nehru.
• Objectives: Improve agriculture, lay foundation for industrial growth.
• Budget: Rs 2,067 crore.