After world war i, what became of most of the central powers’ colonies ?

a.) they became independent nations.
b.) they remained colonies of central powers’ nations.
c.) they became league of nations mandates.
d.) they were run by the league of nations.

The best and most correct answer among the choices provided by your question is the third choice or letter C, "They became League of Nations mandates."

League of Nations mandate was a legal status for certain territories transferred from the control of one country to another following World War I, or the legal instruments that contained the internationally agreed-upon terms for administering the territory on behalf of the League of Nations. 

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Democracy and darwinism would be my answer.