Concept:Nuclear fusion reactions release energy by combining light nuclei, and the products are always particles and high-energy photons from the nucleus itself.
Explanation:During nuclear fusion, light nuclei such as hydrogen isotopes combine to form a heavier nucleus.
Common products include
α-particles, neutrons, and gamma rays (
γ-rays) which carry away the released nuclear energy.
X-rays, however, are produced when fast-moving electrons lose energy or change orbits around an atom, not directly from the fusion of nuclei.
Thus, X-rays are not regarded as a nuclear fusion product.
Answer:A. X-ray