1. The question asks which body finally approved the Five Year Plans in India (under the Planning Commission regime, which existed until 2014).
2. The Planning Commission (Option C) was responsible for formulating the draft Five Year Plans.
3. The draft plan was then submitted to the Union Cabinet (Option A) for consideration.
4. After Cabinet approval, the draft plan was presented to the National Development Council (NDC) (Option D).
5. The NDC, comprising the Prime Minister (as chairman), all Union Cabinet Ministers, Chief Ministers of all States, representatives of Union Territories, and members of the Planning Commission, was the highest policy-making body regarding development planning.
6. The final approval of the Five Year Plan rested with the National Development Council (NDC). The President's role (Option B) was not direct approval of the plan.