Which of the following symptoms indicates the presence of diabetes?

The presence of diabetes can manifest through a range of symptoms, and the correct answer encompasses all of them. Frequent urination, known as polyuria, occurs because high blood sugar levels can cause the kidneys to work harder to filter and absorb the excess glucose, resulting in increased urine output. Dry skin may be attributed to dehydration, a common effect of high blood glucose levels, as the body loses more fluid. Extreme hunger or polyphagia can arise in individuals with diabetes as the body's cells are unable to effectively use glucose for energy, prompting a sense of increased appetite even after eating.

This multifaceted approach to understanding symptoms shows that diabetes can present through various bodily signals, making it critical for individuals to recognize early indicators such as those listed in the choices provided. Therefore, the answer that encompasses all these symptoms is indeed the most comprehensive and accurate.