between supporters of the monarchy of Charles I (and his son and successor, Charles II) and opposing groups in each of Charles’s kingdoms, including Parliamentarians in England, Covenanters in Scotland, and Confederates in Ireland.
The outcome was threefold: the trial and the execution of Charles I (1649); the exile of his son, Charles II (1651); and the replacement of English monarchy with the Commonwealth of England, which from 1653 (as the Commonwealth of England, Scotland, and Ireland)
The answer is B, because the Song would make all government candidates undergo the civil service exam. Only if they passed would they be able to become part of the bureaucracy.