QOD-2

Answer:
A. IV administration of potassium
Rationale: 
Hypokalemia occurs when there is not enough potassium; this decrease in potassium can cause life-threatening arrhythmias. Although hypokalemia may be treated in various ways by adding potassium to the diet, if the condition is severe enough that it is causing heart conduction changes, the patient should receive potassium as soon as possible to correct the situation, preferably through an IV.