The given answer range of 3.5-5.5 for potassium (mEq/L) is correct. This range represents the normal levels of potassium in the blood. Potassium is an essential electrolyte that plays a crucial role in maintaining proper cell function, nerve impulses, and muscle contractions. Deviations from this range can indicate abnormal potassium levels, which can lead to various health issues such as muscle weakness, irregular heartbeat, and even paralysis. Therefore, it is important to monitor and maintain potassium levels within this range for optimal health.