The answer is letter c, identifying the principles of character. It is because in this way, having to know the principles of a character will likely help an individual to understand and to know about sportmanship in sports and how to apply them as he or she plays sports.
Early civilizations always formed near rivers/river deltas. Rivers provide water, silt (fertile soil) which is good for farming, and transportation, as well as natural barriers (such as the cataracts-rapids-in the Nile) which protected the Egyptians from invasions/attacks. The Nile is also predictable in it's seasonal flooding (compared to other early civilizations' rivers), which was good for the Egyptians.
(All of those factors influenced the development of the Egyptian civilization.)
It would help because everyone would fall in line with the same mentality hope this helps