What do scientists use to measure the magnitude (strength) of earthquakes? A.) seismograph
B.) people observations
D.) bathroom scales

Option A

Explanation:

The answer is "seismograph" or option A. A seismograph is a tool that records duration and force of a Earthquake when it strikes. It works by responding to ground motions because it's very sensitive to vibrations. So when the device picks up a huge vibration is quickly records how long it lasts and how strong the vibration was.

Hope this helps.

the answer for this question would be d. glaciers

i think the answer would d