The correct answer is - B) coarse-grained.
Coarse-grained texture appears when the igneous rocks are cooling of slowly. The slow cooling of the igneous rocks indicates a formation of this texture deep into the ground where there are higher pressures and higher temperatures. The deeper they cool off, and the bigger the temperature and pressure, the bigger the crystals, and vice versa, the closer they are to the surface, and the lower the temperature and pressure, the smaller the crystals. The texture of the rocks is one of the characteristics that are used to determine their type, their origin, their evolution, their formation.
