The correct sequence of the words mentioned in the Preamble are:

Correct option is A

The correct answer is Secular, Justice, Liberty, Unity, and Integrity of Nation.
Explanation:
The Preamble to the Constitution of India outlines the fundamental principles and values of the state, emphasizing its secular and inclusive nature. It reads:
"We, the people of India, having solemnly resolved to constitute India into a Sovereign, Socialist, Secular, Democratic Republic..."
This is followed by key goals:
1. Justice – social, economic, and political.
2. Liberty – of thought, expression, belief, faith, and worship.
3. Equality – of status and opportunity.
4. Fraternity – assuring dignity of the individual and the unity and integrity of the Nation.
Thus, Secularism is one of the defining principles, listed alongside Justice and Liberty, and it aligns with the priority of ensuring the Unity and Integrity of the Nation as a central goal.