Question

which of the following statements is true about the health of people in the united states during the past 170 years?
a. infant mortality has decreased.
b. life expectancy has more than doubled.
c. the average person has become taller.
d. all of the above are true.

Explanation:

• Infant mortality: Advances in medical care (e.g., neonatal intensive - care units, better prenatal care) have led to a decrease in infant mortality rates over the past 170 years in the US.
• Life expectancy: In 1850, the life expectancy in the US was around 38 years. In 2020, it was about 77 years (although there have been some recent fluctuations due to various factors like the COVID - 19 pandemic). So, it has more than doubled.
• Height: Improvements in nutrition (more access to a variety of foods, better understanding of balanced diets) and overall living conditions (less exposure to certain diseases that can stunt growth) have contributed to an increase in the average height of people.

Answer:

D. All of the above are true.