Explanation:

Only One as Only Statement 2 is correct.

Invented in the 1980s, 3D printing burst into the mainstream around the 2010s, when many thought it would take over the world. The technology, however, at the time was expensive, slow and prone to making errors. In recent years, some of these flaws have been done away with, making 3D printing more prevalent than ever before. For instance, it’s being used in automotive and aerospace sectors to make parts of cars and rockets respectively.

3D printing, also known as additive manufacturing, is a process that uses computer-created design to make three-dimensional objects layer by layer. It is an additive process, in which layers of a material like plastic, composites or bio-materials are built up to construct objects that range in shape, size, rigidity and colour.

3D printers construct the desired object by using a layering method, which is the complete opposite of the subtractive manufacturing processes.