What is the primary purpose of intravenous (IV) therapy?

The primary purpose of intravenous (IV) therapy is to deliver fluids, medications, and nutrients directly into the bloodstream. This method ensures rapid absorption and immediate availability of these substances to the body's tissues and organs. Because IV therapy bypasses the gastrointestinal tract, it is particularly useful for patients who are unable to take medications orally due to factors like nausea, vomiting, or difficulties swallowing.

Additionally, IV therapy allows for precise control over fluid and electrolyte balance, which is critical in various medical conditions requiring prompt treatment. It can also be used to administer various forms of therapies, including nutrition in the form of parenteral nutrition, which provides essential nutrients to patients who cannot consume food normally. Therefore, option A encompasses the comprehensive utility of IV therapy in clinical settings, emphasizing its vital role in patient care.