Which system provides the pilot with speed and altitude data?

The pitot-static system is designed specifically to provide the pilot with essential flight data, including airspeed and altitude information. This system operates using two key components: the pitot tube and static ports.

The pitot tube measures dynamic air pressure as the aircraft moves through the air, which allows the airspeed indicator to display true airspeed. Meanwhile, the static ports measure atmospheric (static) pressure, which is crucial for determining altitude through the altimeter.

In contrast, the avionics system encompasses various electronic systems and instruments used for communication, navigation, and monitoring the flight environment, but it does not directly measure speed and altitude. The fuel system is primarily responsible for storing and delivering fuel to the engine, and the electrical system supplies power to the aircraft's various components but does not provide flight data. Thus, the pitot-static system is the correct choice for delivering speed and altitude information to the pilot.