What process explains the appearance of a mountain range of gabbro and basalt in a region largely covered with limestone?
A) The limestone formed at the bottom of the sea and the gabbro and basalt were pushed up by tectonic action afterward.
B) The limestone formed at the bottom of the sea and the gabbro and basalt, which formed in a river valley after the limestone, were pushed up to the surface.
C) The gabbro and basalt formed by igneous processes, and the limestone formed on the lower areas after the gabbro and basalt were pushed into a mountain range.
D) The limestone formed at the bottom of the sea and the gabbro and basalt formed by volcanic action afterward.
Answer: A
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