Answer:
c.) clay, silt, sand, gravel
Step-by-step explanation:
Since clay has very small particles, there isn't much space between them. This is why clay is so smooth.
Silt is almost like flour, but smoother than sand.
Sand can be formed by small pieces of rock carried away by wind. It is very grainy and won't stick as well.
Gravel is almost like pebbles and can be rough in texture. You can't form anything with gravel, so therefore gravel is the biggest texture.
-kiniwih426