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:

After hydrogen is used as fuel in a star's core, nuclear fusion processes can produce elements like iron (formed in massive stars during late - stage fusion), silicon (produced through a series of fusion reactions in stars), carbon (formed from the fusion of helium nuclei), and oxygen (also formed from fusion reactions in stars). Gold is typically formed in more extreme events like neutron - star mergers rather than in the normal core fusion of a star after hydrogen burning. Hydrogen is the initial fuel and is being consumed, not newly formed in large amounts after it is used as fuel in the core (except in some very minor processes which are not the main products).

Answer:

Iron, silicon, carbon, oxygen.