Load-_____ parts are specifically those that support the load.

Load-bearing parts are elements in a structure or mechanism that are specifically designed to support the weight or load placed upon them. In engineering and construction contexts, these parts must be carefully designed and constructed to ensure they can safely carry the loads without failure, maintaining stability and safety in the overall structure.

For example, in a building, load-bearing walls and columns play a vital role in supporting the roof and upper floors. In machinery, load-bearing components are crucial for transferring forces within the system while ensuring operational integrity.

The other terms do not accurately describe the specific function of supporting loads. "Controlling" relates more to managing the operation or behavior of a system but does not directly refer to structural support. "Operating" may refer to components that actively perform work but doesn't imply anything about load support. "Managing" typically involves oversight or organization rather than the physical support capacity of parts. Thus, the term "load-bearing" precisely encapsulates the purpose and function of these crucial components.