Which type of seismic wave arrives first at a seismograph?
a. surface waves
b. tsunamis
c. S waves
d. P waves

The answer would be P wave

Explanation:

The first kind of body wave is the P wave or primary wave. This is the fastest kind of seismic wave, and, consequently, the first to 'arrive' at a seismic station. The P wave can move through solid rock and fluids, like water or the liquid layers of the earth.

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