Concept:The Lorenz Curve is a graphical tool that shows the distribution of income or wealth in a population.Explanation:The curve plots the cumulative share of total income against the cumulative share of the population.From this curve, we calculate the Gini coefficient, which is a number between 0 and 1.A higher Gini coefficient indicates greater inequality in the distribution.Thus, the Lorenz Curve is primarily used to measure the level of inequality in a society.Answer:B. It is used to calculate Inequality.