Answer the following question given this paragraph: Particles that are composed of three quarks are called baryons . The two best known baryons are protons and neutrons. A proton is composed of two up quarks and one down quark (uud). The charge on the proton is the result of adding the charges on these quarks . Neutrons are composed of one up quark and two down quarks (udd). The charge on the neutron is the result of adding the charges on these quarks . Q: What are the two best known baryons? Choices: - flux and neurons - electrons and neutrons - shafts and neutrons - protons and neutrons A:
protons and neutrons