Final answer:
The nurse's best response would be option d, stating that sexual activity can be gradually resumed like other activities and giving a comparison of energy expenditure.
Step-by-step explanation:
The nurse's best response to the patient's concern about having sex after an AMI would be option d: "Sexual activity can be gradually resumed like other activity. A good comparison of energy expenditure is climbing two flights of stairs."
Resuming sexual activity after an AMI should be approached with caution and with guidance from a healthcare provider. It is important for the patient to gradually resume physical activity, including sexual activity, after an AMI. They can start by comparing the energy expenditure to climbing two flights of stairs, which gives them an idea of how strenuous the activity may be and how they should pace themselves.