The single most important contributor to an increase in life expectancy is
A) the decrease in the infant mortality rate.
B) the increase in individuals' beliefs in the importance of exercise.
C) advancement in medical technology.
D) advancement in medical care.

Question

​The single most important contributor to an increase in life expectancy is
A) ​the decrease in the infant mortality rate.
B) ​the increase in individuals' beliefs in the importance of exercise.
C) ​advancement in medical technology.
D) ​advancement in medical care.

Quizplus · Accepted Answer

The decrease in the infant mortality rate is the single most important contributor to an increase in life expectancy. If fewer infants die at birth or in their first year of life, the overall life expectancy of a population increases. This is because infant mortality has a significant impact on the overall mortality rate. Advances in medical technology and medical care also play a role, but the decrease in infant mortality is the most significant factor. The increase in individuals' beliefs in the importance of exercise may have a positive impact on overall health, but it is not the most important contributor to an increase in life expectancy.

​The Single Most Important Contributor to an Increase in Life

The Single Most Important Contributor to an Increase in Life