Social tradition is important because of the following points:
(1).It helps to increase mutual understanding and cooperation between people of society.
(2).There is a great role of it in civilized society as it eradicates many social problems like murdering,theft,and many other violences.
(3)It helps to establish peace and stability in the society.
(4).It helps to maintain religious tolerance though which each and every people respect each other's religion.
(5)It increases feeling of brotherhood and ownness among the people of society.
(6) The most and much important point of importance of social tradition is that It helps to preserve our ancestors art, tradition,skills etc which surely teaches current generation about the lifestyle,skills etc
It is the answers point of view
I would say a is the answer
If it's on a house post, I'm sure it's signifying that Yoruba will offer hospitality
