I think the correct answer among the choices presented above is option D. A batolith is not often a small part of a sill. A batolith is a large body of rock formed underneath the Earth's surface by the intrusion and solidification of magma.
A sill is a tabular sheet of the rocks that are intruded by the older sedimentary rocks and forms the beds of the volcanic lava or beds, along the foliation the metamorphic rock, while the batholith is composed of multiple masses, of the bodies of the orogenesis of the mountains and other irregular dimension and sizes.
And are formed by the convergence of the many platonic as to form a huge expanse of the plutonic rocks.
Occurs in an area of larger than 100 km squares as they were exposed to great pressure at the surface of the earth which is shown in term the mass wasting and the erosion process
