Which of the following statements about stars that produce similar spectral patterns is true? A. The stars have about the same mass. B. The stars are about the same size. C. The stars are the same age. D. The stars are made of similar elements.

Answer 1

The correct statement about stars that produce similar spectral patterns is:

D. The stars are made of similar elements.

Stars produce spectral lines based on the absorption and emission of light at specific wavelengths due to the elements and ions present in their atmospheres. Therefore, if two stars have similar spectral patterns, it generally indicates that they have similar elemental compositions. While the other options may have some truth in certain contexts, they are not definitive for all stars with similar spectral patterns.