Question

Seismograph is an instrument used to
(a) Record strength of wind
(c) Record lightening
(b) Record vibrations of earthquake
(d) Record temperature​

Answer 1

Record vibrations of earthquake is the correct answer.

Hope it helps

Answer 2

Answer:

(b)

Explanation:

A seismometer is the internal part of the seismograph, which may be a pendulum or a mass mounted on a spring; however, it is often used synonymously with "seismograph". Seismographs are instruments used to record the motion of the ground during an earthquake.