Computer Science for IGCSE & O level - Hardware (Section 25 - No. 10)

In the context of 3D printing, what does the term "additive manufacturing" primarily refer to?

Removing material from a solid block.

Building an object layer by layer.

Melting plastic into a mold.

Using CNC machines to sculpt objects.

Additive manufacturing is the process of building a 3D object by adding material layer by layer.