A major reason for having national development plans is to

The major reason for having national development plans is to ensure efficient use of available resources. A national development plan provides a roadmap for a country to achieve its economic and social goals, outlining strategies and policies to be pursued to achieve these goals. By doing so, a national development plan helps to ensure that resources are allocated and utilized effectively and efficiently towards achieving these objectives. Additionally, national development plans can involve people in national programmes and ensure that more citizens are involved in planning, but these are secondary benefits rather than the primary reason for having a plan.