If this star is just settling down...where will we find it on the H-R diagram?

Question

A team of astronomers discovers one of the most massive stars ever found. If this star is just settling down in that stage of its life where it will be peacefully converting hydrogen into helium in its core, where will we find it on the H-R diagram?

near the very top of the main sequence, in the upper left

among the supergiants, in the upper right

it could be anywhere on the diagram; we would need more information to determine its place

a little bit below the Sun on the main sequence

among the most brilliant of the white dwarfs, in the lower left

I'm thinking it's among the white dwarfs, in the lower left..

Answer 1

A massive star will be with supergiant stars in the top of the diagram. At the right of the diagram at the begin of her life (red color).

Answer 2

Near the very top of the main sequence, in the upper left.

The main sequence runs from massive, bright stars in the upper left to low mass, dim stars in the lower right. Red giants and super giants are off the main sequence in the upper right and white dwarfs are off the main sequence in the lower left.

Answer 3

The scale of the sequence goes from

Hot <> Cold

Large
^
v
Small


The star in question is Large and Hot so it would be upper left.