This is the correct answer because in the first period Athens was a Monarchy. Legendary king Theseus was the one that unified Athens under his rule. Still, after the death of last king Codro, monarchy was abolished. Power was given to a hand of influential people, who were bringing decisions. That changed when Peisistratus introduced tyranny in the second half of 6th Century.
After his death, with the new reforms, among which the most famous were the once introduced by Cleisthenes a new form of government - Democracy was introduced.
