The best explanation for why the author chooses to order the paragraphs in that way is:
C. to establish the financial and technological competition among other countries in solar energy so that his argument becomes more urgent.
This option highlights the author's intention to create a sense of urgency and importance regarding America's involvement in the solar energy market by first outlining the current state and competition in the sector. This sets the stage for later discussions about how America can increase its involvement and respond to that competition.