Polyuria - large production of urine (this is a sign of having diabetes due to the huge urge of peeing)
Polyphagia - a person who has huge appetite towards food. Excessive amounts of consumption of food. Another symptom of diabetes.
Polydipsia- having a huge appetite towards thirst. Nothing can seem to satisfy your thirst. Another sign of diabetes.
Polycythemia - is having high concentration of red blood cells in your blood. Making your blood thicker which causes it to have trouble traveling through organs, etc. This isn't a cause for diabetes nor a symptom of diabetes this more for COPD, sleep apnea, and obesity hypoventilation syndrome.
Right answer is D.