Question

Earthquake _____ is a means of deciding where the ground is stable enough to build on in earthquake-prone areas. prevention mitiation zoning retrofitting

Answer 1

Earthquake RETROFITTING is a mean of deciding where the ground is stable enough to build on in earthquake prone areas.
Earthquake retrofitting involves the modification of structures of an existing property so that it will be able to stand and survive if earthquake occur. This is usually done in order to prevent homes from been displaced from their foundation in the event of earthquake.

Answer 2

Earthquake Retrofitting is a mean of deciding where the ground in stable enough to build on in earthquake prone areas.

Actually it is done to avoid huge damages that may be caused by the earthquake in the earthquake prone areas. Modification to the existing structures of houses is done. This make the homes, buildings etc more resistant to the ground motions, thus decreasing the chance of losses during the earthquake.