Unity brings people of different cast, religion, ethnic groups,etc together with the absence of conflict. For eg you can take Nepal as a country with unity and diversity. As unity brings peace and harmony it is very necessary to sustain unity among ethnic groups for maintaining harmony as well as for maintaining religious tolerance.
In economics, a circular flow model is a diagram that is used to represent the monetary transactions in an economy.
National income, output, and expenditure are generated by the activities of the two most vital parts of an economy, its households and firms, as they engage in mutually beneficial exchange.
Households
The primary economic function of households is to supply domestic firms with needed factors of production - land, human capital, real capital and enterprise. The factors are supplied by factor owners in return for a reward. Land is supplied by landowners, human capital by labor, real capital by capital owners (capitalists) and enterprise is provided by entrepreneurs.<span> Entrepreneurs combine the other three factors, and bear the risks associated with production.</span>
The communication tool that would allow a current presidential candidate to most effectively interact with the greatest number of citizens would be a frequently updated social media site with a Q&A forum. The correct answer is C.