The huge star will be found on the main sequence of the Hertzsprung-Russell (H-R) diagram, quietly converting hydrogen to helium in its core. Therefore, Near the very top of the main sequence is correct.
The luminosity, or brightness, and surface temperature of stars are shown graphically in the H-R diagram.
It aids in the classification and comprehension of various phases of star evolution by astronomers.
The bulk of stars, including our Sun, spend the most of their lives in the main sequence on the H-R diagram, which represents stars that are fusing hydrogen into helium in their cores.
Astronomers will locate a huge star on the main sequence of the H-R diagram that is settling down and conducting hydrogen fusion in its core.
The star's brightness and surface temperature, which are based on its mass and evolutionary stage, will identify its precise location on the main sequence.
The surface temperature and luminosity of massive stars are higher than those of lower-mass stars.
Thus, the massive star that has been found will be in the upper part of the main sequence, indicating a high brightness and high surface temperature, while it is calmly converting hydrogen to helium.
As a star exhausts its hydrogen fuel, it will eventually leave the main sequence and enter the next phase of its lifecycle.
The specific path a star takes on the H-R diagram depends on its mass and other characteristics.