Task: Question Answering
Input (English): How did the lunar maria form?
(A)The giant impact that created the Moon left smooth areas that we call the maria. (B)Volatiles escaping from the Moon's interior heated and eroded the surface in the regions of the maria. (C)The early bombardment created heat that melted the lunar surface in the regions of the maria. (D)Large impacts fractured the Moon's lithosphere allowing lava to fill the impact basins.
Output (English): D