One day you go on a picnic. There is a slight breeze the napkins stay on the tablecloth becuase of...?

D. There is not enough force to break the napkins free. ume the situation where the napkins start to slide on the table. Since sliding friction is always less than static friction, if they had started moving that would indicate there was enough force to break static friction meaning there was more than enough force to overcome sliding friction since sliding is always less than static. Rolling friction has to do with wheels rolling on a surface and fluid friction does not apply here since neither the napkins nor the tablecloth are fluid.