Stars are celestial objects consisting mostly of hydrogen and helium. Only one of the choices is correct. Only two of the choices are correct. Choices I, II, and III are correct. None of the choices are correct.
Stars shine due to the chemical combustion of hydrogen.
Stars reflect light from planets. The fusion of hydrogen into helium is a star's energy source. A star's light is attributed to the radioactive decay of heavy elements. Carbon, nitrogen, oxygen, and other elements needed for life were produced by stars. Stars can be connected with imaginary lines to form pictures.