UPSC CDS 2 2021 GK Paper

The correct matching is A-3,B-1,C-4,D-2.
The Lorenz Curve (the actual distribution of income curve), a graphical distribution of wealth developed by Max Lorenz in 1906, shows the proportion of income earned by any given percentage of the population.
The Phillips curve is an economic concept developed by A. W. Phillips. He stated that inflation and unemployment have a stable and inverse relationship.
Engel curves relate the quantity of good consumed to income. If the good is a normal good, the Engel curve is upward sloping. If the good is an inferior good, the Engel curve is downward sloping.
The Laffer curve illustrates a theoretical relationship between rates of taxation and the resulting levels of the government's tax revenue.