An older adult patient presents with complaints of exertional dyspnea. On examination. jugular venous distension and bilateral pedal edema are noted. An echocardiogram reveals a left ventricular ejection fraction of 35%. Which of the following mechanisms is contributing to the fluid retention observed in this patient?
O Activation of the renin-angiotensin system
O Suppression of aldosterone levels
O Release of atrial natriuretic peptide
O Augmented renal glomerular filtration