Which of the following components is not structural or load-bearing in a high power rocket?

A recovery parachute is not a structural or load-bearing component in a high power rocket, as its primary function is to provide a means of slowing the descent of the rocket after it has completed its flight, aiding in recovery rather than supporting the rocket's structural integrity during ascent or throughout its flight.

In contrast, the body tube forms the main structure of the rocket, providing necessary support and shape. The nose cone is designed to minimize aerodynamic drag and direct airflow around the rocket, contributing to the overall structural design. Fins serve to stabilize the rocket during flight by providing control surfaces for stabilization and guidance, making them critical to the rocket's flight dynamics and structural integrity. Each of these components plays a crucial role in ensuring the rocket withstands the forces of launch and flight, unlike the recovery parachute, which is deployed after the rocket's engines have ceased operation.