Question

which elements can be made in the core of a star after the hydrogen is used as fuel? select four answers. iron gold silicon carbon oxygen hydrogen

Explanation:

In a star's core after hydrogen - burning, through nuclear fusion processes like helium - burning, carbon - burning, oxygen - burning, and silicon - burning, elements such as iron, silicon, carbon, and oxygen can be produced. Gold is mainly formed in supernova explosions and neutron - star mergers rather than normal stellar core fusion after hydrogen fuel is used up. Hydrogen is the initial fuel but can also be present in small amounts in later stages due to incomplete fusion.

Answer:

A. iron, C. silicon, D. carbon, E. oxygen