Question

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

Explanation:

Spectral type is related to temperature. Stars of the same spectral type have the same temperature. Luminosity depends on size and distance affects apparent - brightness. A main - sequence star and a white dwarf of the same spectral type have different sizes and thus different luminosities, and distance is independent of spectral type.

Answer:

temperatures