Which choice is a benefit of surface raceways?

Surface raceways are designed to be mounted directly onto existing structures, such as walls and ceilings, making them particularly advantageous in scenarios where installation needs to be done quickly or where modifications to the existing infrastructure are minimal. Their ease of installation allows for flexibility and adaptability in various settings, especially in refurbished buildings or facilities where running conduit through walls may not be feasible. This can save time and labor costs, making surface raceways an efficient choice for many electrical installations.

While other options may have some merit in specific contexts, they do not accurately reflect the primary advantages of surface raceways. For instance, stating that they are invisible once installed is misleading, as surface raceways are designed to be visible and accessible for maintenance purposes. Similarly, while they may offer some level of protection, it is not superior compared to other robust options in situations that require high security against vandalism. Lastly, their cost-effectiveness can vary; they may be less expensive than some raceway types, but not necessarily all. Thus, the benefit of easy mounting on existing structures stands out as a primary advantage.