Categorize each of the following fundamental particles as either interacting via the strong force, the electromagnetic force, the weak force,  or the gravitation force: a neutrino, an electron, a proton, a neutron.
A neutrino interacts through the weak force.
An electron interacts through the electromagnetic force and the gravitational force.
A proton interacts via the strong force , the electromagnetic force and the gravitational force.
A neutron interacts via the strong force and the gravitational force.