This bridge type has draping cables supporting additional set of cables. This are best used over rivers, earthquake zone, and can be constructured with atleast two towers.

• A. Cable-Stayed Bridge
• B. Suspension Bridge
• C. Arch Bridge
• D. Truss Bridge

Answer: (B)

A suspension bridge uses main cables that drape between two or more towers, with vertical hangers or suspenders hanging from those cables to carry the deck. That draped main-cable system supporting additional cables (the hangers) is what the description is pointing to. This arrangement makes it possible to span very long distances, which is ideal for crossing wide rivers because you don’t need numerous piers in the water. The main cables are anchored at each end and the towers bear the load, so you can have at least two towers (often more for longer spans). The flexibility of this system also helps it respond to seismic forces, allowing movement without losing overall stability. This distinguishes it from other bridge types: cable-stayed bridges have cables that run directly from towers to the deck and don’t form the same draped, hanging system; arch and truss bridges don’t rely on long draped cables to support the deck and are less suited to very long river spans.