Which of the following is a common symptom of Chronic Obstructive Pulmonary Disease (COPD)?

Cyanosis is a common symptom of Chronic Obstructive Pulmonary Disease (COPD) because it results from inadequate oxygenation of the blood. In COPD, the airflow limitation and impaired gas exchange lead to decreased oxygen levels, which can cause a bluish discoloration of the skin and mucous membranes. This symptom is particularly noticeable in the lips and extremities, indicating that the body's tissues are not receiving sufficient oxygen.

In contrast, high fever is not typically associated with COPD; it is more commonly linked to infections or inflammatory processes. Nausea can be a consequence of various conditions but isn't a specific symptom of COPD. Headaches can occur for a variety of reasons, but they are not a common indication of COPD itself. The hallmark symptoms of COPD primarily include chronic cough, sputum production, and dyspnea, with cyanosis being a significant sign indicating the severity of respiratory compromise.