Question

Which among the following is the strongest, natural force?
A. Gravitational force
B. Magnetic force
C. Electrical force
D. Nuclear force

Answer 1

Hint : The strongest among the following is the one which binds protons and neutrons in an atomic nucleus. It is actually the strongest of the four fundamental forces of nature. It binds all the fundamental particles of matter with each other to produce larger particles.

Complete step by step answer
The strong nuclear force, also known as the strong nuclear interaction, is actually the strongest of the four fundamental forces of nature. It is six thousand trillion-trillion-trillion (which is around 39 zeroes just after 6) times way stronger than the force of gravity, as mentioned in the HyperPhysics website. And that is just because it binds the all fundamental particles of matter with each other to produce larger particles. It actually holds together the quarks which help in making up protons and neutrons, and as the strong force which also keeps the protons and neutrons of an atom's nucleus together tightly.

Hence, Correct Option is D, Nuclear force.

Additional Information
The gravitational force is actually a force which attracts any 2 objects having mass. We say the gravitational force is attractive because it always tries to pull masses together, it never really pushes them apart from each other. In general, each and every object, even we all, is pulling on every other object in the whole universe.
Magnetic force is actually the attraction or repulsion which arises between electrically charged particles due to their motion. It is a very basic force which is responsible for such effects like the action of electric motors and the attraction of magnets for iron.
The repulsion or attraction between any 2 charged bodies is known as an electric force. Just Similar to any force, its impact and effects on any given body are described by Newton's laws of motion. The electric force is also among the list of any other forces which exert over objects.
The nuclear force is actually a force that acts b/w the protons and neutrons of atoms. The nuclear force is the force that binds the protons and neutrons in a nucleus all together. This force can also exist between protons and protons, also neutrons and protons or even neutrons and neutrons. This force is actually what holds the nucleus together.

Note
The nuclear force is the one which binds the protons and neutrons of atoms and helps it in holding the nucleus all together which makes it the strongest force. And it is actually the strongest of the four fundamental forces of nature.