Answer :
Final answer:
Rotary Drilling is the method where the drill bit rotates and cuts into the rock. It is commonly used for deep boreholes. The broken rock pieces are pushed to surface by fluid.
Explanation:
The term for the type of drilling in which the drill bit rotates and cuts into rock is C) Rotary Drilling. Rotary drilling is one of the most common methods of drilling, especially for deep boreholes. The drill bit is mounted at the end of a long section of connected drill pipe, which is gradually lengthened as the hole becomes deeper, allowing the drill bit to constantly rotate and cut into the rock. The broken bits of rock (cuttings) are brought to the surface by a fluid (usually mud or air) that is pumped down through the drill pipe and back up through the space between the drill pipe and the hole.
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