Questions

Macroeconomics is the study of overall aggregate changes, behavior and performance of the economy of the country i.e, unemployment, GDP, inflation, etc...

All the above options are the treatments for heart disease.

Since, the starting statement carries a subject; the next statement will carry a verb i.e. Q follows as it mentioned the discovery of the Regent. R will bethe continuing statement which states what he actually discovered. P follows next as it talked about the reaction of the Regent after the discovery. And S would be the concluding statement and thus form a coherent paragraph.

The correct formation would be, ‘The Regent having discovered that he had imprisoned an innocent man released Voltaire and gave him a pension.’