Which of these materials can be cut by a 3D cutter but not a 2D cutter?

A 3D cutter is designed to work in three dimensions, meaning it can cut through objects that have depth, height, and width. This capability allows it to create complex shapes, including those that require cutting through thick materials or creating intricate 3D structures.

In contrast, a 2D cutter is limited to cutting in two dimensions, which means it can only handle flat materials and cannot effectively cut through any thickness.

Wood, being a solid material with significant thickness, requires a tool that can handle its 3D nature. The capability of a 3D cutter to slice through solid wood, allowing it to create various shapes and designs, underscores why wood is the correct answer to this question.

Other materials like paper, fabric, and plastic can often be cut by both 2D and 3D cutters, but they do not showcase the distinctive cutting capabilities of a 3D cutter as effectively as wood does.