The nurse is reviewing a client's health history. Which finding puts the client at greatest risk for heart disease?

Choice A reason: While a history of smoking is a risk factor, having quit 10 years ago significantly reduces the client's cardiovascular risk profile compared to an active smoker. The body’s vasculature recovers over time, and a decade of cessation drastically lowers the likelihood of acute myocardial infarction. Choice B reason: Engaging in regular physical activity, such as walking a dog, is a protective factor against heart disease. Exercise improves myocardial efficiency, lowers blood pressure, and helps maintain healthy lipid levels, which counteracts the development of atherosclerosis and other cardiovascular pathologies in the general population. Choice C reason: Consuming a low-sodium diet is a healthy lifestyle choice that helps manage blood pressure and prevent fluid volume overload. This dietary habit reduces the risk of hypertension, which is a primary precursor to coronary artery disease, heart failure, and other adverse cardiovascular events. Choice D reason: Sedentary behavior, such as sitting for most of the workday, is a major independent risk factor for heart disease. Lack of movement contributes to obesity, insulin resistance, and poor lipid metabolism, significantly increasing the risk of developing metabolic syndrome and subsequent coronary artery calcification.