Respuesta :
(here is my suggestion) all i know is most of the hydrogen and helium in the Universe were created in the moments after the Big Bang. Heavier elements came later.
Answer:
A. nuCLEOsynthesis
Explanation: I bolded it for the people who don't have brainly plus so they don't have to watch an ad. Not 100% sure but I'm pretty sure this is right.