What is defined as the length of a trench that a hoe can excavate from one position?

The correct choice describes the concept of a "set." In the context of excavation, especially when using equipment like a backhoe or excavator, a set refers to the distance or length that the machine can reach horizontally from a fixed position without needing to be moved. This measurement is crucial for planning excavation work, as it helps determine how deep and far the machine can dig effectively within its operational range. Understanding the capabilities of the equipment ensures that the operator can efficiently complete the task while maximizing productivity and minimizing the need for repositioning, which can lead to delays and increased costs.

While there may be relevant terms associated with excavation and construction, "set" specifically captures the idea of a machine’s reach, making it the most appropriate term in this scenario. Understanding these distinctions helps ensure that contractors and equipment operators can plan and execute their work effectively, improving safety and efficiency on the job site.