What have scientists learned from studying seismic waves that travel through earths interior?

a)seafloor spreading is the result of earthquakes that can occur at quite a distance.

b)the mantel of the earth is a place where molten rocks remain in a rigid alignment with one another.

c)there is almost no layering between earth's surface and its core.

d)the outer core of the earth is liquid.

The most logical answer seems to be A) Seafloor spreading is the result of earthquakes that can occur at quite a distance.

Explanation:

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they both go up but then go back down. they both end lower than they started. lastly, they both are competitive/the second on.

explanation: