Question

question 9
during the main sequence stage, how is energy generated in a stars core?
hydrogen fuses into helium.
carbon fuses into hydrogen.
helium fuses into hydrogen.
carbon fuses into oxygen.

Explanation:

During the main - sequence stage of a star, hydrogen in the core undergoes nuclear fusion to form helium, releasing a large amount of energy. Other options involve incorrect fusion processes.

Answer:

Hydrogen fuses into helium.