Question

based on this diagram, which type of stars would belong to spectral class m and have the lowest luminosity? giants white dwarfs main - sequence stars supergiants

Explanation:

• Look at the diagram's axes: Spectral Class (x - axis) and Luminosity (y - axis).
• Focus on Spectral Class M.
• Compare the luminosity of different star types (Giants, White dwarfs, Main - sequence stars, Supergiants) at Spectral Class M.
• White dwarfs have the lowest luminosity among them at Spectral Class M.

Answer:

White dwarfs