Question

which statement is true?
○ nuclear power plants require more fuel than conventional power plants.
○ there is a short supply of high quality uranium.
○ nuclear power plants are inefficient.
○ it is difficult to responsibly dispose of nuclear waste products.

Explanation:

• Analyze the first option: Nuclear power plants need much less fuel (like uranium) per unit of energy produced compared to conventional power plants (e.g., coal - fired) because nuclear reactions release a huge amount of energy from a small amount of fuel. So this statement is false.
• Analyze the second option: There is not a short supply of high - quality uranium. In fact, there are significant uranium reserves, and also, nuclear power plants can use lower - grade uranium with appropriate technologies, and there are also options like reprocessing and using alternative nuclear fuels. So this statement is false.
• Analyze the third option: Nuclear power plants are relatively efficient in terms of energy production per unit of fuel. The energy density of nuclear fuel is extremely high, and the conversion of nuclear energy to electrical energy has a reasonable efficiency. So this statement is false.
• Analyze the fourth option: Nuclear waste products, especially high - level radioactive waste, remain radioactive for a very long time (thousands of years). Finding a way to dispose of them in a way that ensures they do not pose a threat to the environment and human health is very challenging. There are issues like finding suitable geological repositories, ensuring long - term safety, and dealing with public concerns. So this statement is true.

Answer:

D. It is difficult to responsibly dispose of nuclear waste products.