Which of the following treatments is aimed at managing fluid retention in congestive heart failure?

Diuretics are medications specifically designed to help the body eliminate excess fluid by increasing urine production. In the context of congestive heart failure (CHF), this is crucial because the heart's impaired ability to pump blood effectively can lead to fluid buildup in the lungs and other tissues, causing symptoms such as swelling (edema) and shortness of breath. By using diuretics, healthcare providers aim to reduce this fluid overload, improving the patient's comfort and overall heart function.

The other options center around different aspects of health management. Adequate fiber consumption plays a role in digestive health and can help prevent constipation, which is not directly related to managing fluid retention. Liquid supplements may be used for nutritional support but do not directly address fluid management. Avoiding sodium is indeed an important dietary strategy in CHF to help with fluid retention, as high sodium intake can exacerbate the problem, but it does not actively promote fluid excretion like diuretics do. Thus, while some options may contribute to overall health management, they do not focus on the direct mechanism of managing fluid retention as effectively as diuretics.