B. He wants to disprove the idea that poor nations will eventually be able to support themselves.
<em>Explanation:</em>
<em>The author believes that rather than money and food, exporting technology and advice is a more modern approach. However he admits that whether or not the Green Revolution can increase food production as much as it claims is a debatable.</em>
<em>According to the author this is an irrelevant point. He referenced a Rockefeller Foundation Vice-President who likened the growth and spread of humanity over the earth's surface to the spread of cancer in a human body. </em>
