Final answer:
Squash is the most nutrient-dense source of potassium among the given options, with a cup of cooked squash containing around 450-500 mg of potassium.
Step-by-step explanation:
Squash is the most nutrient-dense source of potassium among the given options. Potassium is an essential mineral that helps maintain proper muscle and nerve function, regulate blood pressure, and support heart health. A cup of cooked squash contains around 450-500 mg of potassium, making it an excellent choice for meeting your daily potassium needs.
Learn more about Nutrient-density of potassium-rich foods