Scientists around the world have been working for decades on perfecting the process of nuclear fusion in the lab. Which statement justifies this research?

Nuclear fusion combines light atomic nuclei and releases a large amount of energy, much like the process that powers the Sun. Scientists study how to control fusion in the lab because it could provide energy with abundant fuel and fewer safety and waste concerns than many existing sources. This supports the goal of creating cheap, safe, and sustainable energy, choice D.

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