Who Is the Subject of George Packer's Essay, "Change the World

Who is the subject of George Packer's essay, "Change the World"?

A) Tea Party activists (strongly conservative Republicans who oppose taxes and want a much "smaller government")
B) successful young entrepreneurs who have developed social networking and other innovations of digital technology in Silicon Valley, California
C) bioengineers and researchers exploring ways to change our genetic code to solve health, economic, and social problems
D) geoengineers who are devising ways to change weather patterns in order to increase food supply and blunt the effects of global climate change