Infant Mortality Rate is–

Correct option is A

Sol. Infant Mortality Rate (IMR) is defined as the number of deaths of infants under 1 year of age per 1000 live births in a given year. It is a key indicator of the overall health and healthcare system of a country. High IMR often reflects poor maternal health, inadequate healthcare access, malnutrition, and lack of immunization.
Explanation of each option:
· (a) The infant deaths per thousand live births – Correct. This is the accurate and official definition of IMR used by WHO and national agencies.
· (b) The infant deaths per thousand deliveries – Incorrect. Not all deliveries result in live births; only live births are used for IMR calculation.
· (c) The infant deaths per 1 lakh live births – Incorrect. IMR is measured per 1000, not per lakh, to ensure sensitive comparisons.
· (d) Number of infant deaths in 1000 population every year – Incorrect. This defines crude death rate, not specific to infants or live births.