The Constitution of India describes India as a:

The correct answer is: c) Sovereign, Socialist, Secular, Democratic Republic

India is a sovereign, socialist, secular, democratic republic. This means that India is a free and independent country with its own government and laws. It is also a country that is committed to social justice and equality for all citizens, regardless of their religion or caste. India is a democracy, which means that the government is elected by the people.

The other options are incorrect because:

• A unitary republic is a country in which the central government has a great deal of power, and the power of the local governments is limited.
• A federation is a country in which power is shared between the central government and the local governments.
• A confederation is a loose association of independent states that have agreed to cooperate on certain matters.