According to the Hertzsprung-Russell diagram, which two groups are most likely to contain the stars with the lowest temperatures?

Question

A graphical representation using to classify stars according to their luminosity, spectral type, color, temperature and evolutionary stage
Supergiants
Giants
Main sequence stars
White dwarfs

Answer 1

According to the Hertzsprung-Russell diagram, the two groups most likely to contain stars with the lowest temperatures are:

1. Giants
2. Supergiants

In the H-R diagram, both of these groups occupy regions toward the right side, where cooler temperatures are found. The main sequence stars typically have higher temperatures and the white dwarfs are found in the lower left region, which generally corresponds to higher temperatures compared to giants and supergiants.