Answer:
d.optimal level of arousal.
Explanation:
Optimal arousal is a psychological construct referring to a level of mental stimulation at which physical performance, learning, or temporary feelings of wellbeing are maximised .
Reference:
Smith, S. 1990 Dictionary of Concepts in Recreation and Leisure Studies. Westport: Greenwood.
economic systems that are the most important to a democracy are characterized by ownership of private property, freedom of enterprise, free prices, private motive and limited interference of government. The market is left to the forces of demand and supply with the government only interfering as a regulator.
It is also known by the names capitalism and free market. A free enterprise economy is made up of consumer spending, business investments and government purchases. Each of these parts play an important role in the free enterprise economy. Consumers are an important part of a free enterprise economy.
Charlemagne or Charles the great was the king of Franks from 768.
The consuls, as they ran the government and headed the army. They could also veto each other, to keep and support one another.