Question

which issue poses the greatest long - term challenge in the development of new nuclear power plants?
controlling carbon dioxide emissions
storage of radioactive waste
controlling fission reactions
mining of uranium

Explanation:

Nuclear power plants produce radioactive waste that remains hazardous for thousands of years. Storing it safely for such long - term is a major challenge. Carbon dioxide emissions are not a major issue for nuclear power as it is a low - carbon energy source. Fission reactions can be controlled with appropriate technology. Uranium mining, while having its own environmental and resource issues, is not as long - term a challenge as waste storage.

Answer:

B. storage of radioactive waste