Answer:
A.) White dwarfs are formed from the collapse of low mass stars, less than about 10 time the mass of the Sun. ... On the other hand, neutron stars are formed in the catastrophic collapse of the core of a massive star.
B. According to the HR diagram, a star with the surface temperature of 10,000 Kelvin is a star with a B spectral type. Moreover, if the star were on the main sequence, then it would have a luminosity nearly 100 times more than that of the sun.
C. After leaving the main sequence, Vega will become a class-M red giant and shed much of its mass, finally becoming a white dwarf. At present, Vega has more than twice the mass of the Sun and its bolometric luminosity is about 40 times the Sun's.
Explanation:
