The correct option is B b) 2 only
Ans: B
Though the Indian Constitution is federal and envisages a dual polity (Centre and states), it provides for only a single citizenship, that is, the Indian citizenship. The citizens in India owe allegiance only to the Union. There is no separate state citizenship. The other federal states like USA and Switzerland, on the other hand, adopted the system of double citizenship.
In USA, each person is not only a citizen of USA but also of the particular state to which he belongs. Thus, he owes allegiance to both and enjoys dual sets of rights—one set conferred by the national government and another by the state government.