The three correct answers regarding the relationship between nebulae and stars are:
- Stars explode to form nebulae.
- Stars form from nebulae.
- Nebulae form from stars.
These statements reflect the processes of stellar evolution, where stars can create nebulae upon their death (especially in supernova explosions), and where nebulae serve as the birthplace of new stars. Nebulae can also contain remnants of stars that have ended their life cycles.