Which of the following is a common symptom of ascites?

Abdominal distension is a common symptom of ascites, which is the accumulation of fluid in the peritoneal cavity. When fluid accumulates, it causes the abdomen to swell and become noticeably distended. This distension can result in discomfort and may be accompanied by other sensations such as heaviness in the abdomen.

While other symptoms mentioned could be associated with liver disease or conditions that may lead to ascites, they are not as direct or specific as abdominal distension. For instance, jaundice typically indicates bilirubin buildup due to liver dysfunction, fatigue can arise from many conditions, and leg edema can result from fluid retention due to various factors, but none of these directly signify the presence of ascites as clearly as abdominal distension does. Thus, abdominal distension is a key clinical finding in patients experiencing ascites.