at 10^{-10} s during the evolution of the universe, formed, which are elementary particles that make up…

at 10^{-10} s during the evolution of the universe, formed, which are elementary particles that make up protons and neutrons.
Answer
Brief Explanations:
Quarks are elementary particles that combine to form protons and neutrons. In the early - stage evolution of the universe at around (10^{-10}) s, quarks formed.
Answer:
Quarks