Final answer:
Option (C) correctly lists family history, obesity, and lack of physical activity as common risk factors for both cardiovascular disease and breast cancer, with smoking also being a significant factor for CVD.
Step-by-step explanation:
The most common risk factors associated with both cardiovascular disease (CVD) and breast cancer are family history, obesity, and lack of physical activity, making option (C) the correct answer. While genetics and family history are non-modifiable risk factors, obesity and physical inactivity are modifiable lifestyle factors that can be addressed to lower the risk. Furthermore, smoking is a well-known risk factor for CVD, and while its association with breast cancer risk is less direct, it's still considered relevant in overall health risk assessments.
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