Step 1: Identification of Coarse Crushers.
Jaw crushers are employed for the initial, coarse reduction of materials. Their operation involves the compression of material between a stationary and a movable jaw. These devices are utilized for diminishing the size of substantial materials such as rocks.
Step 2: Clarification of Options.
- Option (D), the Jaw crusher, is the correct selection as it is designed for coarse crushing applications. - Options (A), (B), and (C) represent crushers not primarily designated for coarse crushing.
Final Determination: \[\boxed{\text{D) Jaw crusher}}\]