The correct answer is B) The developed world will use more fossil fuels.
What is not likely a consequence of future energy needs is "The developed world will use more fossil fuels."
What is starting to happen in developed countries, basically in Europe, is that fewer nations are using fossil fuels in order to protect the environment and combat climate change. That is why they confirmed their participation in the Kyoto Protocol. The United States did not want to ratify the agreement. The developing countries are using more solar energy, windmills, and other types of renewable energy sources to protect the environment and ecosystems.