What does secularisation indicate?

The correct answer is Option (3) → Arrival of modernity

Secularisation was related to the arrival of modernity and the rise of science and rationality as alternatives to religious ways of understanding the world.

Here's why the other options are not what secularisation signifies:

• Increase in religion: Secularisation is actually the opposite of this. It refers to the decline of the influence of religion in social and political spheres.
• Arrival of irrationality: Secularisation is more about a shift towards reason and logic, not irrationality.
• Rise in Traditionalism: Traditionalism often emphasizes religious values and practices. Secularisation implies a move away from such dominance of religion in public life.