Select the option in which the words share the same relationship as that shared by the given pair of words.

Anemometer : Wind

Seismograph : Earthquake

Anemometer : Wind

The logic followed here is :

Anemometer : Wind = Anemometer is a device which is helpful in measuring the wind speed and direction

Similarly

Seismograph : Earthquake

= Seismograph is the device used to record the motion of the ground during an earthquake