Answer :
Final answer:
When Susie starts to burn off all of her fuel, she goes through stellar evolution and becomes a main sequence star.
Explanation:
When a star like Susie starts to burn off all of her fuel, it goes through a process called stellar evolution. In this phase, Susie will first burn hydrogen in its core through nuclear fusion, converting it into helium. This process releases a tremendous amount of energy in the form of light and heat, causing Susie to shine brightly as a main sequence star.
Learn more about stellar evolution here:
https://brainly.com/question/32220788
