- A yellow dwarf is a kind of main-sequence star
- The sun is a kind of yellow dwarf
- Therefore, the sun is a kind of main-sequence star

- The sun is a kind of main-sequence star
- Red giant stars are greater in volume than main sequence stars
- Hence, red giant stars are greater in volume than the sun

Therefore, red giant stars are greater in volume than the sun
Question: Compared to the Sun, a red star most likely has a greater
Context: - A yellow dwarf is a kind of main-sequence star 
- The sun is a kind of yellow dwarf 
- Red giant stars are greater in volume than main sequence stars