Is lined paper a homogeneous solution or suspension?

Lined paper is a heterogeneous mixture, not a homogeneous solution or suspension. In a homogeneous solution, the components are uniformly distributed at a molecular level, like salt dissolved in water. In a suspension, the components are not dissolved but rather mixed together, like sand in water. Lined paper consists of distinct components - the paper itself and the lines drawn on it - that are visibly separate and not uniformly distributed.