The answer is<u> "a. social psychology".</u>
Social psychology is the logical study of how individuals' thoughts, emotions, and practices are impacted by the real, envisioned, or inferred nearness of others.
The terms thoughts, emotions, and practices incorporate the majority of the mental factors that are quantifiable in a person.
The reference to envisioned or inferred others recommends that we are inclined to social impact notwithstanding when no other individuals are available, for example, when sitting in front of the TV, or following internalized social standards.
According to Adam Smith, the self-interest represents the personal gain of the individual and actions he takes in order accomplish that self interest. He was a staunch believer in the free market and was against government regulations because he thought that the free market would most benefit the individual and therefore the society. The competition is what makes the the manufacturers produce better products and more of them, while this will spur the costumers to buy those products. When many act in their own self interest, the market will give both to the manufacturers and the consumers.
Since the early 1900's, the industrial use of water has INCREASED DRAMATICALLY.
