What does a cutter hydraulic tool specifically do?

A cutter hydraulic tool is specifically designed to sever or shear material, making it an essential tool in various rescue and emergency situations. These tools utilize hydraulic power to exert extreme cutting force, allowing them to slice through tough materials like metal, wood, or plastic with precision and efficiency. This function is critical in scenarios such as vehicle extrications, where it may be necessary to cut through the wreckage to free trapped individuals.

The other options do describe functions that may be associated with different types of hydraulic tools. For example, a spreading tool is intended to pry or spread objects apart, while pulling tools are designed to move objects toward the operator. Compression tools are used to crush or compress materials. However, the primary and defining function of a cutter hydraulic tool is to cut or shear materials, which is why this option is the correct choice.