When considering the friction between a rubber tire and a wet asphalt road, which material property is most likely to increase the friction coefficient compared to rubber on dry asphalt?

When the road is wet, tiny water films form, but the roughness of the pavement still lets the tire’s rubber press into the bumps. Other options are incorrect because Some think a hotter tire will stick better because it feels softer, but heat actually makes rubber more pliable and can lower grip; A darker asphalt may look hotter, but color only changes light absorption, not the road’s grip on the tire.