The answer to this question is socialization :)
Because there is no science that supports the claim that there are <span>special sunglasses that allow differing amounts of light to the left or right eye and thereby helping to treat mood disorders</span><span>, these special sunglasses demonstrate the principle of </span>extraordinary claims. Extraordinary evidence is required in order this statement to be true and proofed.
The main items traded were gold and salt. The gold mines of West Africa provided great wealth to West African Empires such as Ghana and Mali. Other items that were commonly traded included ivory, kola nuts, cloth, slaves, metal goods, and beads.
Answer:
C seems the strongest and best.
Explanation: