Which of the following stages will the Sun definitely go through as it gets older?

Question

Quizplus · Accepted Answer

As the Sun evolves and runs out of fuel, it will expand and become a red giant. After that, it will shed its outer layers and create a planetary nebula. What remains of the Sun will eventually become a white dwarf. It is theoretically possible for a black dwarf to form, but this process takes billions of years and no black dwarfs have been observed yet. So, all of the above stages will happen to the Sun as it gets older.

Which of the Following Stages Will the Sun Definitely Go