Answer:B. coarse-grained
Explanation: Batholith is a part of igneous rock that is about 100 square kilometers in Length, they are often made by of felsic or intermediate rock types, such as granite, quartz monzonite, or diorite.
At the Half Dome of intrusive Batholiths one is expected to see coarse-grained Rock materials (rock or sand particles or grains with different sizes). Igneous rocks are very hard rocks such as the Batholiths are formed as a result of cooled magma.