A 34-year-old Hispanic woman who is 8 weeks pregnant presents to the nurse practitioner for a prenatal visit. Which of the following is primary prevention for reducing this patient's risk of developing coronary heart disease?

Choice A reason: Low-dose aspirin is used primarily for preeclampsia prevention in pregnancy, not general primary prevention of coronary heart disease. Choice B reason: Omega-3 fatty acids may have cardiovascular benefits but are not standard primary prevention strategies for coronary heart disease in pregnancy. Choice C reason: Cardiac rehabilitation is a secondary prevention measure, used after cardiac events, not primary prevention. Choice D reason: Correct. Avoiding excessive weight gain during pregnancy helps reduce long-term cardiovascular risk and supports metabolic health, making it a primary prevention strategy.