Q: In stars like our sun, hydrogen atoms join together to create what?


Read this paragraph and choose the correct option from the provided answers:

A nuclear fusion reaction is so named because the nuclei (center) of atoms fuse (join) together in the process. In stars like our Sun, hydrogen atoms join together to create a helium atom. Nuclear fusion reactions need a lot of energy to get started. Once they begin, they produce even more energy. ( Figure below ).

 Choices:

- water molecule

- oxygen atom

- iron atom

- helium atom


A:
helium atom