what is the sun classified as on the hertzsprung - russell diagram? red giant supergiant white dwarf main…

Brief Explanations:

The Hertzsprung - Russell diagram plots stars' luminosity against their temperature. The Sun is a medium - sized, stable star that fuses hydrogen into helium in its core. Stars like the Sun are classified as main - sequence stars on the H - R diagram. Red giants are large, cool, and luminous stars in a later stage of evolution. Supergiants are even more massive and luminous than red giants. White dwarfs are small, hot, and low - luminosity remnants of stars.

Answer:

D. main sequence star