The primary objective of the National Development Council in India was to provide final approval to the 5-year plans. Let's delve into the details to understand this better.

1. National Development Council (NDC):
The National Development Council was established in India in 1952 as a non-statutory body to promote and coordinate the development activities of the country. It served as a platform for deliberations between the central and state governments on matters of national importance.

2. Five-Year Plans:
The concept of Five-Year Plans was introduced in India in 1951 with the aim of achieving rapid economic development and reducing socio-economic inequalities. These plans outlined the development goals and strategies for a period of five years.

3. Planning Commission:
The planning process in India was initially the responsibility of the Planning Commission. It was a statutory body established in 1950 to formulate and implement the Five-Year Plans. The Planning Commission prepared the draft plan proposals, which were then discussed and finalized by the National Development Council.

4. Role of the National Development Council:
The National Development Council played a crucial role in the planning process by providing final approval to the Five-Year Plans. It reviewed and discussed the draft plan proposals prepared by the Planning Commission, taking into account the inputs and suggestions from the central and state governments.

5. Deliberations and Coordination:
During the meetings of the National Development Council, the central and state governments participated in discussions on various aspects of the plans, including resource allocation, sectoral priorities, and policy frameworks. This allowed for better coordination and collaboration between the different levels of government.

6. Approval and Implementation:
Once the National Development Council approved the Five-Year Plans, they were implemented by the central and state governments. The plans guided the allocation of resources, implementation of development projects, and monitoring of progress towards the set targets.

Conclusion:
In conclusion, the National Development Council in India played a pivotal role in the planning and development process. Its primary objective was to provide final approval to the Five-Year Plans, ensuring coordination and cooperation between the central and state governments in achieving the country's development goals.