Final answer:
Left-sided heart failure is commonly associated with pulmonary edema, which is the excess fluid in the lungs' air sacs due to the left ventricle's inability to pump efficiently.
Step-by-step explanation:
The symptom associated with left-sided heart failure is D. Pulmonary edema. This condition leads to excess fluid in the air sacs of the lungs and is a common sign that the left ventricle of the heart is not pumping efficiently. As the left ventricle fails, it cannot move enough blood into the systemic circulation, resulting in a backup of fluid in the pulmonary circulation. This causes increased pressure in the pulmonary capillaries, leading to fluid leakage into the lung tissues, manifesting as pulmonary edema. Symptoms include difficulty breathing and chest pain, and it is considered a life-threatening situation requiring immediate medical attention.