Which of the following is not a popular surface for tennis courts

Answer 1

Common surfaces for tennis courts include:

1. Hard courts - such as acrylic or asphalt surfaces
2. Clay courts - made from crushed stone, brick, or shale
3. Grass courts - consisting of natural grass
4. Carpet courts - using removable synthetic materials

If you provide a list of options, I can help identify which one is not typically regarded as a popular surface for tennis courts.