The elements heavier than hydrogen and helium were created by nucleosynthesis in massive stars.
Hence Option (b) is correct.
Stellar nucleosynthesis, the process by which stars combine lighter elements with heavier ones in their centers, releases energy.
Many of the lighter elements, up to and including iron and nickel, are produced by nuclear fusion processes in the most massive stars.
Fusion, also referred to as "nuclear burning," is the conversion of lighter elements into heavier ones to produce the energy that powers a star.
Most elements heavier than helium in the cosmos are thought to have formed in stars when lighter nuclei fused to form heavier nuclei.
That is how nucleosynthesis, which occurs in large stars, produces the elements heavier than hydrogen and helium.
Learn more about Nucleosynthesis here https://brainly.com/question/24172157
#SPJ4
