For example, you can choose whether or not to get in a car with a drunk friend at the wheel. However, you may have to ride a school bus, get a ride from family or a friend, or walk across streets to get to school each day. You can't choose if there is a history of heart disease in your family, which may increase your risk to develop heart disease. You can, however, choose to minimize this risk with proper diet and exercise. Even when risk assessment provides enough information to determine risks, we don't always choose to avoid them.
Some people choose to go sunbathing even though the increased risk of skin cancer is well known.
Some people choose to smoke cigarettes even though the increased risk of lung disease and cancer is very well known. Taking risks isn't always bad. Suppose you want to learn to ski. Sure, there is a risk that you could get hurt. But if you succeed, you may decide the feeling of accomplishment and the enjoyment of being able to ski are worth the risks.