The second type of wave produced by an earthquake is an s wave (secondary wave), which is a transverse wave. it produces: a) a back-and-forth motion on the surface of the earth b) an up-and-down motion on the surface of the earth

B) an up-and-down motion on the surface of the earth

Explanation:

The S waves are seismic waves that are produced when an earthquake happens, and they can only travel through solid mediums, this means that they create the up and down motion on the surface of the earth, the waves that create the back and forth motion on the surface are the P waves. The image can help you better understand it.

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