Assume that all four h-r diagrams below represent a star in different stages of its life, after it starts to fuse hydrogen in its core. rank the hr diagrams based on when each stage occurs, from first to last. star in the sequencea little outsidemore outsidethen below the line

Answer to the question as below

Explanation:

In all four H-R diagrams, first we look at the diagram which is at the left and it represents the Sun; it may be any other one solar mass star as a hydrogen burning main sequence star, with spectral type G and one solar luminosity.

In the next diagram it shows that the Sun after it has exhausted its core hydrogen and left the main sequence, making it a sub-giant with energy generated by hydrogen burning in a shell around an inert helium core.

Look into the third diagram which shows the Sun a little later; its energy source is still hydrogen shell burning, but at this point it has expanded in size so much that it is a red giant.

In the final diagram which is located at far right; it shows the white dwarf corpse of a one-solar-mass star; it is hot because it is the exposed core of the dead star, but dim because it is small in size.

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i think the answer would be reserve.