Which is the bumpiest?

 - paper bag
 - asphalt road
 - cotton shirt
Bumpy is a property. A bumpy material is covered in lumps and bumps. It is not flat or smooth.
Look at each picture, one at a time. Imagine touching the material shown in each picture.
Of the choices, the asphalt road is the bumpiest. If you touch an asphalt road, it will feel lumpy and bumpy.