On which day is Constitution Day celebrated every year in India?

26 November 

The correct answer is Option 4 -26 November

Constitution Day in India is celebrated every year on November 26th. It's also known as Samvidhan Divas.
The primary reason is to commemorate the adoption of the Constitution of India. On this day in 1949, the Constituent Assembly officially adopted the document that became the foundation of the Indian republic.
The day serves as a reminder of the significance of the Constitution in establishing India as a democratic, socialist, secular republic. It enshrines fundamental rights, defines the structure of the government, and lays out the framework for a just and equitable society.