Concept:
Disaster management has evolved from reactive "crisis management" (relief) to proactive "risk management" (mitigation and preparedness). This shift aims to reduce the vulnerability of communities before a disaster strikes.
Step 1: Analyzing the Paradigm Shift (A).
The Disaster Management Act of 2005 was a landmark piece of legislation in India. It moved the focus away from simply distributing aid *after* a disaster to building institutional capacity for prevention and preparedness *before* an event. This is widely recognized as a "paradigm shift" in policy. Thus, Assertion (A) is correct.
Step 2: Analyzing the Nature of Hazards (R).
A "hazard" is a natural phenomenon (like an earthquake or cyclone) that cannot be entirely "avoided" or stopped by human intervention. Proactive management aims to reduce the risk and impact of these hazards so they do not become "disasters," but it is impossible to "easily avoid all natural hazards." Reason (R) overstates the capability of disaster management.
Step 3: Conclusion.
While proactive approaches are highly effective at saving lives and reducing damage, natural forces cannot be completely avoided. Therefore, Reason (R) is logically and factually incorrect.