Answer the following question given this paragraph: 

Nuclear fusion is the opposite of nuclear fission. In fusion, two or more small nuclei combine to form a single, larger nucleus. An example is shown in Figure below . In this example, two hydrogen nuclei fuse to form a helium nucleus. A neutron and a great deal of energy are also released. In fact, fusion releases even more energy than fission does.


Q: What is the opposite of nuclear fusion?

 Choices:

- Solar Power

- energy fission

- might fission

- nuclear fission

A:
nuclear fission
