OPT: (A). heat energy; (B). Change colors; (C). production of energy; (D). hydrogen and oxygen; (E). only black holes; (F). destruction of energy; (G). creation of life; (H). harmful substances;
Q: Fact 1: Nuclear reactions in stars causes stars to produce light. Fact 2: Light contains energy. Given the two facts above, what do nuclear reactions in stars cause?
A:
(C).