C. Manifest Destiny. Many people believed it was bound to happen, that the US would take the east coast to the west. It ended up to be true, but at the cost of millions of Indian lives.
Answer: EXPECTANCY THEORY.
Explanation: The expectancy theory proposes that an individual will behave or act in a certain way because they are motivated to select a specific behavior over others due to what they expect the result of that selected behavior will be. In 1964, Victor H. Vroom developed the expectancy theory and defined motivation as a process governing choices among alternative forms of voluntary activities, a process controlled by the individual.
I would add that it is when lower prices are charged demand will always go up not down.