Final answer:
Bananas are a good source of potassium, which can help increase the patient's dietary intake of this mineral.
Step-by-step explanation:
The physician has suggested increasing the patient's dietary intake of potassium since there is a slight decrease in potassium levels. A good source of potassium includes fruits and vegetables, such as bananas, which are known to be high in potassium. Other foods with substantial amounts of potassium are potatoes, oranges, leafy greens, tomatoes, and avocados. Furthermore, fish, meat, poultry, and whole grains also contain potassium.