Q.Explain the concepts of life expectancy and literacy rate and their significance.

Life expectancy and literacy are two of the clearest markers of how much a country's human development has advanced.

Life expectancy at birth is the average number of years a newborn is statistically expected to live, given the mortality conditions prevailing at that time. It is a summary measure of a population's overall health and access to healthcare, nutrition, and sanitation. In India, life expectancy has risen dramatically — from under 32 years around the time of independence to well above 65–70 years in recent decades — reflecting improvements in public health infrastructure, control of infectious diseases, and better maternal and child care.

Literacy rate is the percentage of the population aged seven years and above who can both read and write with understanding in any language. As per Census 2011, India's literacy rate stood at about 74% (approximately 82% for males and 65% for females), a substantial rise from roughly 18% at the time of the 1951 Census, though the persistent gender gap in literacy remains a significant policy challenge. …

Reporting literacy rate for the TOTAL population rather than the correct base (population aged seven year …