What type of fuselage construction uses steel or aluminum tubing arranged in trusses?

The type of fuselage construction that uses steel or aluminum tubing arranged in trusses is known as truss construction. This design features a structural framework that provides strength and stability through the use of triangular shapes, which distribute loads effectively. Truss fuselages are commonly found in older aircraft designs and some light aircraft, as they are lightweight yet strong, allowing for efficient use of materials.

In a truss structure, the arrangement of the tubing creates a series of interconnected triangles, enabling the fuselage to withstand various forces during flight without excessive weight. This construction method is particularly well-suited for smaller, less complex aircraft where simplicity and ease of repair are priorities.

The other types of constructions listed—monocoque, composite, and reinforced—do not utilize a truss framework. Monocoque construction relies on the strength of the outer skin to support loads with minimal internal structure, while composite fuselages utilize advanced materials to create strong, lightweight components without traditional metal tubing. Reinforced structures would imply the addition of reinforcement to an existing design but do not specifically identify a truss framework.

Thus, identifying truss construction as the correct answer highlights how specific structural engineering techniques contribute to aircraft design and performance.