Question

Which force is always attractive and has a very small range?

Answer 1

Neutrons and protons, both nucleons, are affected by the nuclear force almost identically. Since protons have charge +1 e, they experience an electric force that tends to push them apart, but at short range the attractive nuclear force is strong enough to overcome the electromagnetic force.
Hopefully this helps.

Answer 2

Answer: Neutrons and protons, both nucleons, are affected by the nuclear force

identically.

Since protons have charge +1 e, they experience an electric force that tends to push them apart, but at short range the attractive nuclear force is strong enough to overcome the electromagnetic force.