Which of the following is a problem with nuclear energy?

It puts out air pollution.

It runs on fossil fuels.

Radiation leaks could harm the environment

The fuel is abundant and plentiful.

The problem related to nuclear energy is that its leaks harm the environment. This is so because the radioaction has a very long half-life to be reduced and once contamination takes part, it isn't visible to bare eyes and can cause serious damage to health of human and contaminate soil, water and plants. It is proved that radiation also affects the cells structures and cause mutation on new cells.

i would go with

) C Radiation leaks could harm the environment