Answer :
2 and 3 because a neutron is neutral, a proton is positive, and a electron is negative. So they both have 0 and 1. (neutron and proton or electron)
The answer is 1)
protons and neutrons almost have the same mass
Both, positrons and electrons are lighter than protons and neutrons
protons and neutrons almost have the same mass
Both, positrons and electrons are lighter than protons and neutrons