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.

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 of the universe's evolution, at around (10^{-10}\ s), quarks formed.

Answer:

Quarks