Question

the order of evolutionary stages of the sun would be main sequence, giant, planetary nebula and finally ____________.
nova
white dwarf
none of these
black hole
neutron star

Explanation:

The Sun is a low - mass star. After the planetary nebula stage, low - mass stars (like the Sun) end up as white dwarfs. A nova is a sudden brightening of a star, which is not the final stage of the Sun's evolution. A black hole and a neutron star are the end stages for much more massive stars (black hole for extremely massive, neutron star for more massive than the Sun but not extremely so).

Answer:

white dwarf