Increases in life expectancy in Canada during the twentieth century were due primarily to
A) the control of childhood and infectious diseases.
B) the defeat of chronic illness.
C) the fitness boom.
D) increased use of vitamin supplements.

Question

Quizplus · Accepted Answer

The control of childhood and infectious diseases, through vaccination programs and improved sanitation, was the primary factor in increasing life expectancy in Canada during the twentieth century. Chronic illnesses such as heart disease and cancer continue to be major causes of death, and the fitness boom and increased use of vitamin supplements have had a relatively minor impact on life expectancy.

Increases in Life Expectancy in Canada During the Twentieth Century