Answer:
Electrical force
Step-by-step explanation:
Of the options given, the electric force is the only force that acts at a distance, that is, it is not necessary for two objects to be in physical contact for there to be electric force between them (Another example of force acting at a distance is the force of gravity.).
Instead, forces such as the normal force, friction force, and applied force all need contact between objects to take effect.
For example if an object does not touch the surface the normal force is null.