The theory that explains how people develop perceptions of fairness in the distribution and exchange of resources is called:?

It is Equity Theory..............Equity is one of the most used buzz words when it comes to distribution of wealth, resources, opportunities .....in a country's macroeconomic context...or to be precise in the "political economy" context. 

Option D sound the most logical answer to me........................

(D)                         Thank You.

    D)    equity theory.^^^^^^^^^^^^^^^^^^^^