which best describes a chain reaction associated with a nuclear reaction? neutrons released during a fusion…

which best describes a chain reaction associated with a nuclear reaction? neutrons released during a fusion reaction cause other nuclei to fuse. neutrons released during a fission reaction cause other nuclei to split. helium nuclei released during a fission reaction cause other nuclei to split. helium nuclei released during a fusion reaction cause other nuclei to fuse.
Answer
Brief Explanations:
In a nuclear fission chain - reaction, neutrons released when a nucleus splits cause other nuclei to split. Fusion reactions involve the combination of light - nuclei and do not typically involve a chain - reaction in the same sense as fission. Helium nuclei are products of fusion and do not cause a chain - reaction of splitting or fusing in the described context.
Answer:
Neutrons released during a fission reaction cause other nuclei to split.