Four years ago, acme tool and die included its employees in a profit-sharing plan in which workers started receiving quarterly bonuses based on the company's profits. since this plan was initiated, worker productivity at the company has nearly doubled. this productivity increase is best explained in terms of:

This productivity increase is best explained in term of OPERANT CONDITIONING.
Operant conditioning refers to a situation in which positive reinforcements are used to provide positive behavior. In operant conditioning, behavior is controlled by consequences. In the question given above, the positive reinforcement is the integration of the employees into profit sharing plan and the behavior that resulted from this is the significant increase in productivity.

Answerpredicts that the clash between an exploding population and limited resources will eventually bring economic growth to an end;