What does They refer to in the last sentence of paragraph I? Group of answer choices photons laser beams electrons children. [I] According to physicist Vaughn Draggoo, "NIF will produce more power in a one-nanosecond laser pulse than all the power generated in the rest of the world at that moment." How can light be such a useful source of energy? "Because you can compress a lot of light's energy in a very small point," says Moses. Children discover this when they play with a magnifying glass on a sunny day. Light has no volume, and photons have no charge, so when they are concentrated into a very small space, they do not repulse each other like negatively charged electrons do. "They don't bother one another," says Moses