Read the passage below and solve the questions based on it.
Democracies everywhere, but perhaps nowhere more so than in India, present a complex scenario of tensions between constraints and liberty, unfreedom and freedom, the imperatives of the modern national security state and the aspirations of a free citizenry. The very fact that India has repeatedly been able to mount general elections since it gained its freedom from British rule in 1947, and on a scale never before witnessed in history, is adduced as evidence of the strength of Indian democracy—an accomplishment that seems all the more remarkable given the precarious state of democracy in most of the world. Indeed, assumptions about the robustness of democracy in India always take as their implied referent the contrast that comes to mind with Pakistan and many other states in the global South. Pakistan has been under military rulers for 32 of its sixty years of its existence, and even its civilian rulers have always governed with the apprehension that a coup might summarily remove them from office – as the constant tussle between Benazir Bhutto and Nawaz Sharif, each removed from office more than once to pave the way for the other, amply suggests. In Africa, democratic states have had at least as fragile an existence, and military dictatorships, despotisms, and authoritarian democracies have indisputably been the norm.
What is the meaning of robustness used in the passage?