Answer:
B)to overcome the repulsion between the protons in the nuclei that join
Fusion is basically the fusion of two hydrogen atoms. Now the nucleus of the hydrogen has protons. The protons are positively charged. When you bring two protons together, what happens? They will repel. To overcome this repusion high temperature is needed. Also the atoms of the hydrogen have to be close to each other to effectively fuse.
Explanation:A, C and D all relate to fission, not fusion.
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The statement requires high temperatures and pressures for fusion to occur "to overcome the electrical repulsion between the nuclei, it must be forced together."
What is nuclear fusion?
Nuclear fusion is a reaction in which atoms of the same type joins together to generate a new element.
At temperatures of roughly 107 K, the fusion reaction takes place. This high temperature is required for the nuclei to begin moving at a rapid rate, increasing their kinetic energy and allowing them to overcome the repulsion between them and join together.
When two nuclei approach one other, the electrostatic force of repulsion between them becomes too powerful due to their positive charge, and they do not fuse. As a result, nuclear fusion is impossible at ordinary temperatures and pressures. A high temperature of roughly 107 K and tremendous pressure are required for fusion to occur.
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