According to the article, the 7th leading cause of death is caused when your body becomes resistant to insulin. It is common among people who are overweight or obese.

Being overweight or obese increases the chances of developing the common type of diabetes, type 2 diabetes. In this disease, the body makes enough insulin but the cells in the body have become resistant to the salutary action of insulin.

The answer would be d. most contraceptives are effective when used properly