Respuesta :
Answer:
Nuclear fusion is a kind of nuclear reaction in which two lighter nuclei combine under suitable conditions to form heavier nuclei under suitable conditions
Explanation:
Let us define what Nuclear fusion is
Nuclear fusion occur as a result of two or more atoms coming together to form a more complex or a different atom entirely, and after the process, energy is released or absorbed.
From the given options, the correct answer is
The process by which small nuclei combine into a larger nucleus
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