Question

a main - sequence star of spectral type b8 and a white dwarf star with a spectral type of b8 must have the same temperatures. must have different and could have either the same or different none of these options fit. temperatures. distances. luminosities.

Explanation:

Spectral type is directly related to temperature. Stars of the same spectral type have the same temperature. Luminosity depends on size and distance is unrelated to spectral - type for comparing two stars of the same spectral type.

Answer:

temperatures