Q.2The Human Development Index developed by the United Nations Development Programisthegeometric mean of three separate indices on health, knowledge and living standard.As compared to the simple mean, the geometric mean can

a.simplify computation and allow us to process a large amount of datarapidly

b.indicatehow much each of the three components can affect economic growth

c.increasethe level of development at an increasing rate

d.assume that the three separate indices cannot substitute each other perfectly