AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
Option B — Mazzini's vision of unified democratic republics and his network of secret societies (Young Italy, Young Europe) directly challenged the monarchical and conservative order that Metternich sought to preserve.
Source: The Revolutionaries, Chapter 1
The passage explicitly states: "Mazzini's relentless opposition to monarchy and his vision of democratic republics frightened the conservatives." Options A, C, and D are factually incorrect per the source. Examiners expect you to link Mazzini's ideology (republican, democratic, unified nation-states) to why conservatives feared him — not military power or financial control.