Polyuria, polydipsia, and polyphagia are three major symptoms ofdiabetes. Polyuria is the need to urinate frequently, polydipsia isan increased thirst and fluid intake, and polyphagia is anincreased appetite. Although it is common for multiple symptoms toappear together, some diabetics present none of the three symptoms.Presenting any one or a combination of these symptoms is an exampleof an event, as is presenting no symptoms.
What is the complement of the event that a diabetic person precentral three symptoms?