The correct answer is "A".
The French revolution was a series of social and political manifestations against the ruling Monarchy, which at the time was led by King Louis XVI. There was an increasing discontent among French citizens, as they alleged that Monarchy was mismanaging the country's resources by funding its opulent lifestyle and favoring their close associates, including the clergy.
As a result of the revolution, King Louis was overthrown of power and executed. Many members of the royal family and the governing body suffered the same fate. The country went through a political transformation process of shifting from a Monarchy to a Republic.