What does branch conduit extend from?

The correct choice indicates that branch conduit extends from the main conduit. In outside plant design, the main conduit serves as the primary pathway for cables and fibers to run through the network infrastructure. By design, branch conduits are utilized to create secondary channels that diverge from this main conduit to service additional locations, including distribution points or different areas within a facility.

Understanding this relationship is crucial for effective planning and installation in telecommunications systems. The main conduit provides the backbone, while branch conduits facilitate connections to individual users or devices by allowing cabling to be routed where it is needed, thus optimizing both space and logistics in the pathway layout.