How does the currently accepted model of the nucleus provide evidence of the existence of the strong nuclear force?

The protons have like charges and should repel, so to stay near each other in the nucleus, there is a strong force holding them together.
The electrons have like charges and should repel each other, which is why they are scattered in the electron cloud.
The protons and neutrons have opposite charges and should attract each other, so to keep them apart, there must be a strong force in the nucleus.
The particles in the nucleus are separated by type, showing the existence of a strong force that keeps them apart.

The protons and neutrons have opposite charges and should attract each other, so to keep them apart, there must be a strong force in the nucleus.

Option:C

Explanation:

The model of the nucleus comprises with the numbers of protons and neutrons. The protons that have positive charges apply forces to each other and so the particles try to move far away to one another. Due to the relative stability of the atomic nucleus, the particles do not move and hence there needs some force to make ineffective of the electromagnetic force.

Protons and neutrons are attracted to each other and as a result, there exists the powerful nuclear force. This is a powerful force and only has an effect over a very short range in the nucleus and thus binds protons & neutrons together to make the nucleus.