Solution: The Preamble of the Constitution: WE, THE PEOPLE OF INDIA, having solemnly resolved to constitute India into & SOVEREIGN SOCIALIST SECULAR DEMOCRATIC REPUBLIC and to secure to all its citizens:
JUSTICE, social, economic and political; LIBERTY of thought, expression, belief, faith and worship, EQUALITY of status and of opportunity;
and to promote among them all FRATERNITY assuring the dignity of the individual and the unity and integrity of the Nation;
IN OUR CONSTITUENT ASSEMBLY this twenty-sixth day of November, 1949, do HEREBY ADOPT, ENACT AND GIVE TO OURSELVES THIS CONSTITUTION.
The word federal is not mentioned in the preamble. So option (d) is correct.