The vibrations produced by a jackhammer are used to break up pavement. what type of waves did/does the jackhammer produce into the ground?

P waves 

P-waves are sometimes called pressure waves, and sometimes they are called longitudinal waves. P-waves are transmitted through the Earth’s interior with a backwards and forwards motion along the line of travel, by alternating compression and dilatation. A jack hammer creates P-waves. They are capable of passing through any type of material they encounter, including the liquid of the Earth’s outer core, although they 
will be bent and deflected when they pass across the boundaries separating 
layers of different densities. 

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The answer is  a.first and third quarters