Answer the following question given this paragraph: 

Fission is the opposite of fusion and releases energy only when heavy nuclei are split. As noted in Fusion, energy is released if the products of a nuclear reaction have a greater binding energy per nucleon ( BE / A ) than the parent nuclei. Figure 32.25.


Q: What process is the opposite of fusion and releases energy only when heavy nuclei are split?

 Choices:

- activation

- osmosis

- diffusion

- fission

A:
fission
