Answer:
driving under the influence
Explanation:
Have great day
In order to find the epicenter of an earthquake is really simple. You have three seismographs when all three meet at one point that is where your epicenter of the earthquake will be. All seismographs have a circular diameter, so when three seismographs feel an earthquake they will all meet in one common location.
The answer would be both since you would have to explain what both have in common.
I hope that helped :)