Concept: Disaster risk terms must be understood clearly. Exposure, vulnerability, capacity, and elements at risk are basic terms used in disaster risk assessment.
Step 1: Match exposure.
Exposure refers to the degree to which people, property, systems, or other elements are located in hazard-prone areas.
\[
A \rightarrow III
\]
Step 2: Match vulnerability.
Vulnerability means susceptibility of a community to the impact of disaster. A more vulnerable community suffers more damage.
\[
B \rightarrow I
\]
Step 3: Match capacity.
Capacity means positive capabilities, resources, skills, and managerial abilities that help reduce disaster risk.
\[
C \rightarrow II
\]
Step 4: Match elements at risk.
Elements at risk are people, buildings, infrastructure, and resources exposed to hazards in a given area.
\[
D \rightarrow IV
\]
Therefore, the correct matching is:
\[
A-III,\ B-I,\ C-II,\ D-IV
\]