What is the key characteristic of freehand welding?

Freehand welding is characterized by the welder's ability to maneuver the welding torch or electrode without the constraints of fixtures or other supports. This technique allows welders to access various positions and angles, enabling them to perform welds in scenarios where fixtures are impractical or impossible to use. The flexibility of freehand welding is particularly advantageous in tight spaces or when working on irregularly shaped components, as it permits the welder to adjust their positioning dynamically while maintaining control over the weld pool and the heat input.

In contrast, options involving fixtures, multiple operators, or pre-set angles suggest a more structured and fixed approach to welding, which does not align with the essence of freehand practices. Thus, the primary advantage of freehand welding is indeed the greater freedom of movement it provides, allowing for versatility and adaptability in various welding applications.