Which of the following is a function of antianxiety medications?

Antianxiety medications, commonly known as anxiolytics, are primarily designed to relieve anxiety symptoms and reduce muscle tension. These medications work by affecting neurotransmitters in the brain, particularly gamma-aminobutyric acid (GABA), which has a calming effect on the nervous system. This leads to a decrease in the physical and psychological symptoms of anxiety, such as restlessness, rapid heartbeat, and muscle tightness.

While minimizing fluid loss, suppressing cough reflex, and treating allergic reactions may be important pharmacological functions in their respective contexts, they do not pertain to the primary function of antianxiety medications. The main therapeutic intent behind prescribing these drugs is to manage anxiety disorders, thus making the option that highlights their ability to relieve anxiety and muscle tension the most accurate choice.