Here's why:

* Rolling friction occurs when a round object, like a wheel or ball, rolls over a surface. The force of friction is much lower in this case because the object is not sliding across the surface. Instead, it's deforming the surface slightly and rolling over that deformation. This results in less contact area and less resistance compared to other types of friction.

* Sliding friction happens when two surfaces slide against each other. It's higher than rolling friction because of the significant contact area between the surfaces and the resistance caused by the microscopic irregularities that interlock.

* Fluid friction occurs when an object moves through a fluid (like air or water). This type of friction depends on the object's speed, shape, and the fluid's viscosity. It can be higher or lower than rolling or sliding friction depending on the specific situation.

In summary: Rolling friction minimizes friction because it avoids the direct contact and sliding that create higher resistance.