Explanation:

- At the time of Indian independence in 1947, the life expectancy was quite low due to poor healthcare and widespread poverty.

- Life expectancy refers to the average number of years a newborn is expected to live.

- Option 1: 40 years – This is the most widely accepted figure for 1947, as historical records and government documents often cite around 39–41 years.

- Option 2: 42 years – Slightly higher, but actual estimates rarely mention this number for that period.

- Option 3: 43 years – Also not commonly referenced, as stats remained just above 40 only after several years.

- Option 4: 44 years – ?? This is higher than accepted figures for 1947.

Correct Answer: Option 1 - 40 years