Answer:
Self-interest.
Step-by-step explanation:
Self-interest can be described as the set of actions that will help an individual achieve certain benefits.
For Adam Smith, when people act in their own personal interests, the greatest economic benefit is achieved, that is, self-interest and competition are the two major motivating forces capable of shaping economic activity, for individuals and companies possess the increased resources available such as labor and capital to achieve benefits from market activities to satisfy self-interest and thus boost supply and demand for goods and services.