What is the function of the pitot tube in the Warrior PA-28A?

The pitot tube in the Warrior PA-28A is crucial for measuring airspeed, which is essential for safe flight operations. It works by detecting dynamic pressure created as air flows into the tube, which is then compared to static pressure from the static port. This comparison allows the airspeed indicator to display the aircraft's true airspeed. Accurate airspeed readings are vital for ensuring proper performance during takeoff, landing, and in-flight maneuvers, thereby contributing to pilot decision-making and overall flight safety.

In the context of the other options, altitude is determined by a different instrument using static pressure, temperature is measured with a separate probe, and while pressure is relevant, the pitot tube specifically focuses on airspeed rather than general pressure readings.