Radiation Safety Practice Exam

Which of the following activities is noted as being associated with a one-in-a-million chance of early death?

1. Driving 10 miles

2. Smoking 1 cigarette

3. Riding a bike for 10 miles

4. Spending 2 minutes in a canoe

The correct answer is: Riding a bike for 10 miles

Riding a bike for 10 miles is associated with a one-in-a-million chance of early death primarily due to the relatively low risk factors involved in this activity compared to other choices. When evaluating the risks associated with cycling, various studies have shown that while cycling does carry some level of risk due to potential accidents or exposure to environmental hazards, the overall incidence of serious harm and fatal accidents within the context of cycling a moderate distance, like 10 miles, is relatively low. Factors such as wearing a helmet, cycling in designated lanes, and taking precautions can further mitigate risk. This statistical assessment reflects a general understanding of risk levels in common activities, emphasizing that cycling, when conducted safely, is a relatively low-risk activity compared to others. Thus, it is recognized as having a low incidence of life-threatening accidents over such a manageable distance, supporting the conclusion that riding a bike for 10 miles aligns with a one-in-a-million risk of early death. In contrast, activities like driving, smoking, or spending time canoeing typically have higher associated risks due to factors such as vehicle accidents, health consequences from smoking, and potential water-related incidents.