The statement "red giantsare enormously bright because they are extremely hot" is false. Red giants are indeed very bright, but their brightness is not solely due to their high temperature.Whilered giantsare relatively hot compared to other stars, their brightness is primarily a result of their large size and high luminosity. When a star becomes a red giant, it has exhausted most of its hydrogen fuel and starts to fuse helium in its core. This fusion process causes the star to expand, increasing its size and surface area. The increased surface area allows the red giant to emit more light, making it appearbrighter.Additionally, red giants have lower surfacetemperaturescompared to other stars, such as blue or white dwarfs. Despite their lower temperatures, red giants are still very luminous due to their large size. In summary, red giants are enormously bright due to their large size and high luminosity, rather than their extremely hot temperatures.To learn more aboutred giants,visit herebrainly.com/question/30169582#SPJ11...

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