30. What is the primary message conveyed in the passage about the resilience of high-rise buildings in the face of natural disasters? (A) The resilience of high-rise buildings is primarily determined by their adherence to strict seismic building codes. (B) Ongoing research and physical testing are crucial for improving the resilience of high-rise buildings worldwide. (C) Advancing engineering techniques, such as the use of tuned mass dampers, is key to building resilient high-rise structures. (D) Reinforced concrete construction is the most effective approach for ensuring the resilience of high-rise buildings.