and the resulting collapse of buildings, bridges, and other structures are usually the most significant primary hazards to casue damage during an earthquake

Explanation:

Earthquake is a natural phenomenon in which the shaking of the earth's surface takes place that results in the ground shaking, collapsing of buildings, bridges and some others. When energy is released suddenly from the lithosphere of the earth that causes seismic waves and thus earthquake occurs. The range of the earthquake varies and ranges small scale to large scale.