Which of the Following Examples Best Describes How Geoengineering May

Which of the following examples best describes how geoengineering may help mitigate global climate change?

A) Developing ways to reflect portions of solar energy before they reach the earth, preventing it from contributing to the greenhouse effect
B) Genetically engineering plants to decrease their uptake of carbon dioxide, helping to allow carbon dioxide to be sequestered in the atmosphere
C) Genetically engineering plants to require more water for photosynthesis to occur
D) Developing ways to create carbon sources out of the soil and ocean so that carbon is cycled more rapidly