6 Which of the following caused the demand for health care to increase in recent years?

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a. The percentage of elderly in the population is greater than before.

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b. The cost of medical care has increased.

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c. Government programs enable many people to get medical care without having to pay for it.

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d. All of the above caused the demand for health care to increase in recent years.

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e. Only a and c are reasons for the increase in the demand for health care in recent years.