Which method of collecting primary data is most suitable when informants are illiterate and the investigator wants to ensure high accuracy? MCQ with Answer and Explanation

Explanation:
Life expectancy is derived from a life table that uses age-specific death rates to compute survival probabilities and average remaining lifetime for a hypothetical cohort.

Explanation:
IMR is defined as the number of deaths of children less than 1 year old per 1,000 live births in a given year.

Explanation:
CLI measures the changes in the cost of maintaining a certain standard of living, identical in purpose to the Consumer Price Index.