Which system among the major components of a rocket is responsible for navigation?

The guidance system is integral to a rocket's navigation because it determines the rocket's trajectory and ensures it stays on its intended path throughout the flight. This system employs various technologies such as sensors, gyroscopes, and sometimes GPS to track the rocket's position and orientation in real time. It not only assists in initial launch guidance but also makes adjustments to the rocket's trajectory during flight to counteract any deviations caused by atmospheric conditions or gravitational forces.

The airframe is primarily concerned with the structural integrity and aerodynamic design of the rocket, which supports the various components but does not facilitate navigation. Propulsion is responsible for generating the thrust required to lift the rocket into space and maintain its speed but does not involve determining where the rocket is headed or adjusting its path. The payload refers to the cargo or instruments carried by the rocket and is not involved in navigation either.

Thus, the guidance system uniquely combines hardware and software to achieve precise navigation, making it the correct answer for identifying the component responsible for directing a rocket during flight.