Much of the gap can be attributed to D. a combination of all of the above occurrences in the United States.
In the United States, life expectancy is lower as compared to other countries such as Canada, due to an increased number of accidental death, high numbers of obesity, and babies being born with a reduced weight due to females indulging in drinking or drugs during pregnancy.
People in the United States tend to not care proper care of their diet and also the consumption rate of alcohol is far higher in the United States. Driving under the influence of drugs is also common that causes accidental deaths. Obesity is one of the leading causes of death and heart disease in the United States.
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