What system integrates data from various sensors to control a rocket's flight?

The guidance system is the correct answer as it is responsible for integrating data from multiple sensors to effectively control a rocket's flight. This system gathers information on the rocket's current position, speed, and orientation from various sensors, such as gyroscopes, accelerometers, and GPS units. By processing this information, the guidance system can make real-time adjustments to the rocket's trajectory and attitude, ensuring that it stays on course and reaches its intended destination.

In contrast, the propulsion system primarily focuses on generating the necessary thrust to propel the rocket, without handling sensor data integration for flight control. The environmental control system manages the internal conditions within the rocket, such as temperature and pressure, rather than flight dynamics. The airframe refers to the physical structure of the rocket, playing a vital role in withstanding aerodynamic forces, but it does not perform data integration or control functions. Therefore, the guidance system is key in maintaining the rocket's flight path through effective data integration and control decisions.