The Sun is currently in the "yellow dwarf" stage of its life. It is a type of star known scientifically as a "G-type main-sequence star" (G2V). In simple words, this means the Sun is in the stable part of its life where it produces energy through nuclear fusion.

The Sun is about 4.6 billion years old and is in the middle of its life cycle. This stable stage can last about 10 billion years. During this time, the Sun fuses hydrogen into helium in its core, producing light and heat that supports life on Earth.

Let’s look at the options:
- Red Giant: This is a future stage when the Sun will expand after using up its hydrogen.
- White Dwarf: This is a much later stage when the Sun will shrink after the red giant phase.
- Orange Dwarf: These are stars cooler and smaller than the Sun, and not the same category.
- Yellow Dwarf: This is the correct current stage of our Sun.

So, the Sun is now a Yellow Dwarf, producing energy steadily. Later, after billions of years, it will become a red giant and then a white dwarf.

✅ Correct answer: Yellow Dwarf.