The question is asking to answer the following questions and base on my further research and investigation, I would say that answer would be the following:
#1 D. Oceanic crust is thinner and less dense than continental crust.
#2 B. where an oceanic plate is moving toward a continental plate
#3 A. The seafloor is spreading.<span>
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We explain this puzzle-piece-like build as proof of tectonic plate shifting. As magma inside the earth moves, so do the continental plates on top of the magma. The continents used to be fused together in one larger continent called Pangea. Over the course of 1000s of years, the plates have shifted.
tldr: tectonic plate movements cause this phenomena
I think 10 grams hopefully this helped
