Which of the following symptoms involves a feeling of abdominal fullness?

The correct answer is ascites, which is a condition characterized by the accumulation of fluid in the abdominal cavity. This buildup leads to increased pressure in the abdomen, resulting in a feeling of fullness or distention. Patients with ascites may notice that their abdomen feels swollen or bloated, which can be uncomfortable and may also interfere with normal digestive functions.

Varices refer to swollen veins, typically found in the esophagus or stomach, that can be a complication of liver disease, but they do not directly cause a sensation of fullness. Jaundice, characterized by yellowing of the skin and eyes, results from the buildup of bilirubin and is often associated with liver dysfunction; it does not create a feeling of abdominal fullness. Fatigue is a general state of tiredness or lack of energy and does not specifically relate to abdominal sensations. Ascites is unique among these options because it directly results in the sensation of abdominal fullness due to fluid accumulation.