Marx argued that when workers are paid less than the value of their labor, this

Alienation

Explanation:

This is because when they are paid less than what their labour produced, they find themselves in a position where they are not entitled to their labour. They are in a state where their labour is alien to them. They have no power over the production process. It is directed and controlled by the bourgeoisie. They are bound to do labour, over which they have no control, for the sake of survival. This means that they are not in control of their action (alienation from self) and so on.

Explanation:y+b=40 +v