a. during nebula nucleosynthesis c. during stellar nucle b. during supernova nucleosynthesis d. during big bang nu 4) What elements will be produced when carbon undergoes fusion reactions? a. hydrogen and helium c. oxygen and neon
In the carbon burning stage, carbon undergoes fusion reactions to produce oxygen, neon, sodium, and magnesium. During the neon burning stage, neon fuses into oxygen and magnesium.
