What is the primary feature of mosaic tiles?

The primary feature of mosaic tiles is that they are small, typically measuring less than 2 inches, which allows for the creation of intricate and detailed designs. This small size enables greater versatility in pattern and color combinations, making mosaic tiles particularly popular for artistic and decorative applications. They can be arranged in various layouts to produce detailed images or patterns, providing both aesthetic appeal and creative expression. The adaptability in design makes mosaic tiles suitable for a wide range of surfaces, whether it be walls, floors, or decorative art pieces.

The other options do not accurately reflect the defining characteristics of mosaic tiles. While some tiles may be designed for outdoor use, mosaic tiles are not restricted to this application. Additionally, they are available in a wide array of colors, undermining the notion that they come in a limited range. Finally, the suggestion that they are large and heavy does not align with the fundamental nature of mosaic tiles, which is to be small and lightweight for artistic versatility.