Which of the following influences a rocket's aerodynamic performance?

The aerodynamic performance of a rocket is primarily influenced by its aerodynamic shape. This shape determines how air flows around the rocket during flight, affecting factors such as drag, lift, and stability. A well-designed aerodynamic shape minimizes drag, allowing for faster speeds and more efficient flight. It also helps maintain stability during ascent and descent by ensuring that the center of pressure and center of mass are appropriately aligned.

While options like the type of fuel, length of the rocket, and weight of recovery devices can impact overall performance and flight dynamics, they do not directly dictate how a rocket interacts with the airflow around it. The aerodynamic shape is crucial for managing airflow and ensuring optimal performance in the atmosphere.