Question

question 3 of 10
what is meant by the phrase \the graying of america\?
a. the size of the average american family has decreased.
b. the cost of medical care in the united states has remained constant.
c. americans are having children at an older age.
d. life expectancy has increased in the united states.

Explanation:

"The graying of America" refers to the phenomenon where the proportion of older people in the population is increasing. This is mainly due to an increase in life expectancy. Options A and C are about family - related aspects (family size and child - bearing age) which are not directly related to the concept of a population getting 'grayer' (older). Option B about medical care cost being constant is also not relevant to the aging of the population.

Answer:

D. Life expectancy has increased in the United States.