Question

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Which of the following types of stars is most likely to end up as a red supergiant?

In Graph A, the curve peaks at 800 nm, in the red section of the visible light spectrum. In Graph B, the curve peaks at 550 nm, in the green section of the visible light spectrum. In Graph C, the curve peaks at 450 nm, in the blue section of the visible light spectrum. In Graph D, the curve peaks at 300 nm, in the violet section of the visible light spectrum.

A

B

C

D

Answer 1

Well. I'm not an astronomer, but if I had to make a super educated guess from reasoning such as:

1) Red super giants only form after a star has fully depleted their hydrogen turning it into helium by nuclear fusion.
2) So we find out the spectrum of hydrogen since the questions states which star is likely turn into one, in which means that it still has hydrogen.
3)Hydrogen has a few spectrum wavelengths ranging in violet to blue and little red. But if I had to pick one, I would pick graph D.

Up to you if you want to go with my choice, or wait for a more experienced person in astronomy to come by.

Answer 2

Thankyou.