Answer:
The further people are from the earthquake source, the more warning time they will have, as the waves will take longer to reach them
Step-by-step explanation:
Fatal accidents during an earthquake can happen in the matter of seconds. Sometimes, rooftops can fall on top of the victims' head. An explosion could occur from leaked gas, etc.
Even if earthquakes can't be predicted, having that additional seconds from the warning can be all it takes for a person to get out from their house and go to some place safe.