Which steps do geologists use to find the epicenter of an earthquake? Select three options.

They look at data from at least three seismographs.
They locate the point where circles intersect one another.
They measure the difference between arrival of P waves and S waves.
They draw circles around the epicenter from three locations.
They obtain information about the intensity of earthquakes from seismographs.

They look at data from at least three seismographs

They locate the point where circles intersect one another.

They measure the difference between arrival of P waves and S waves

Explanation:

Geologists look data from seismographs to find epicenter of an earthquake. They locates the point where circles intersect. The epicenter of earthquake is point where earth surface is vertically above hypo center. The geologist measure the difference between P waves arrival and S waves arrival.

i'm assuming that the correct answer is indeed the first one/ "a"..

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.