Answer:
The correct answer is: Quarks are present in protons and neutrons but not in electrons.
Explanation:
Quark is an elementary particle and fundamental constituent of matter.They together form composite particle called hadrons. Most of the stable hadrons formed by quarks are protons and neutrons.
One proton is made up of two up quarks and one down quark.
One neutron is made up of one up quarks and two down quark.
