The model most likely represents B)a fusion reaction in the sun.
In the solar, the nuclear response which takes place is known as the proton-proton cycle, wherein four hydrogen atoms are combined in a series of reactions to form one Helium atom; this chain of reactions also produces strength (inside the form of gamma rays) and some different debris known as neutrinos.
Fusion joins atomic nuclei together. The detail fashioned has extra neutrons or protons than the beginning material. for instance, hydrogen and hydrogen can fuse to form helium.
The model represents a fusion reaction in the sun.
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