Answer:
O Education.
Step-by-step explanation:
Education was of utmost importance to the Athenian society. Every family focused on educating their children, to be trained in the arts and society of their time. Moreover, they were also educated to learn and be prepared for both war and peace, which was a constant fluctuating occurrence.
Moreover, education was also the one area where they can prepare the new generations with physical training, mental and moral qualities. This was done with the objective that they will grow to be responsible citizens and help contribute to the development of the society, thereby placing huge importance on education as compared to warfare and religion or cultural things.