The correct option highlights the unique root systems of mangrove trees, which are adapted to thrive in saline coastal environments. These extensive and complex root networks not only stabilize shoreline sediments but also absorb the energy of storm surges and tidal waves, significantly reducing their impact on coastal communities. As a natural barrier, mangroves play a crucial role in disaster risk reduction, enhancing resilience against climate-induced coastal hazards, a concept emphasized in environmental studies relevant to UPSC Prelims.