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.