Question

how does paleomagnetism provide evidence for seafloor spreading?
earthquakes measured along trenches
continents shifting rapidly over time
satellite data showing plate movements
magnetic stripes on the ocean floor show reversals in earths magnetic field

Explanation:

Paleomagnetism studies ancient magnetic fields. As new seafloor forms at mid - ocean ridges, it records Earth's magnetic field at that time. The alternating magnetic stripes on the ocean floor, which show reversals in Earth's magnetic field, are evidence of seafloor spreading as the new crust is added symmetrically on either side of the ridge over time. The other options are related to different aspects of plate tectonics but not specifically to paleomagnetic evidence for seafloor spreading.

Answer:

D. Magnetic stripes on the ocean floor show reversals in Earth's magnetic field