A Dictatorship is a type of government in which one person or a small group of people, have appointed themselves in control, usually by force, with no constitutional limitations.
A Direct democracy is a type of government in which the people directly decide on things instead of voting for people to decide things.
An absolute monarchy is a type of monarchy in which the monarch does not have any limitations, may they be written or customary.
And a Republic is a type of government in which the supreme power is held by the citizens and those that they elect to represent them. This would be the type of government seen in ancient Rome, so the correct answer is option A.