Answer:
C. Infant mortality rate
Explanation:
The majority of infant mortaliy is caused by birth defects. Usually, this will happen either because the hospital does not have enough equipment or skilled doctor to handle the situation everytime something went wrong or the mother does not meet sufficient nutritional value during pregnancy.
So measuring infant mortality rate could give you some estimation regarding the quality of hospitals and ability for the people to purchase healthy/nutritional food. Both of them are good indications for the nation's health.
