Multiple Choice
Which of the following is true of life expectancy in the United States?
A) It decreased by 15 years in the beginning of the 21st century.
B) It has remained unaffected by improvements in sanitation and nutrition.
C) It increased by 30 years in the 20th century.
D) It has remained unpredictable and has confused demographers.
Correct Answer:
Verified
Correct Answer:
Verified
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