Which of the following is a primary source of potassium?

Oranges are considered a primary source of potassium because they contain high levels of this essential mineral, which plays a vital role in various bodily functions, including maintaining fluid balance, nerve signals, and muscle contractions. Potassium-rich foods like oranges are particularly important in assisting in the prevention of hypertension and promoting overall cardiovascular health.

In contrast, rice and whole wheat bread do contain potassium, but their levels are significantly lower compared to that found in oranges. Olive oil, while a healthy fat, contains negligible amounts of potassium and does not serve as a source for this nutrient. Thus, oranges stand out due to their nutrient density and substantial contribution to potassium intake.