If your choices are A: the equality of men and women
B: the importance of duty over personal desires
C: the superiority of the nobility
D: the knowledge gained through war and conquest
Then the correct answer is B. The importance of duty over personal desires. This is quite common in eastern philosophy, both Indian and Buddhist. People were supposed to disregard their own personal desires because it might not fit the grand scheme of things which is said to exist in their beliefs.