In developed countries, life expectancy is between:

In developed countries, life expectancy is between:

• A. 60 and 65
• B. 75 and 80 years
• C. 85 and 90
• D. 50 and 55

Answer: (B)

Life expectancy is the average number of years a newborn would live if current mortality rates stayed the same. In developed countries, better healthcare, sanitation, nutrition, and living standards raise this average into the mid to late 70s and often into the 80s. Because of that, the range of 75 to 80 years best describes the typical overall lifespan in developed nations. The other ranges are too low to reflect the high level of health and longevity found there. (Keep in mind that some individuals do live longer, and some countries may edge above or below this range, but 75–80 is the common broad estimate.)

Life expectancy is the average number of years a newborn would live if current mortality rates stayed the same. In developed countries, better healthcare, sanitation, nutrition, and living standards raise this average into the mid to late 70s and often into the 80s. Because of that, the range of 75 to 80 years best describes the typical overall lifespan in developed nations. The other ranges are too low to reflect the high level of health and longevity found there. (Keep in mind that some individuals do live longer, and some countries may edge above or below this range, but 75–80 is the common broad estimate.)