Alvaro Silva Calderon was the Secretary General of
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NATO
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WHO
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OPEC
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ILO
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None of these
C
Correct answer
Explanation
Álvaro Silva Calderón was a Venezuelan diplomat who served as the Secretary General of OPEC (Organization of the Petroleum Exporting Countries) from 2002 to 2003. OPEC is a cartel of oil-producing countries that coordinates petroleum policies to ensure stable prices for producers.